Return-Path: X-Processed-By: Virex 7 on prxy.net X-Real-To: stagecraftlist [at] theatrical.net Received: by prxy.net (CommuniGate Pro PIPE 4.2.6) with PIPE id 4920845; Sat, 06 Nov 2004 03:01:44 -0800 X-ListServer: CommuniGate Pro LIST 4.2.6 List-Unsubscribe: List-ID: Message-ID: From: "Stagecraft" Sender: "Stagecraft" To: "Stagecraft" Precedence: list Subject: Stagecraft Digest #187 Date: Sat, 06 Nov 2004 03:01:31 -0800 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Disposition: inline X-Spam-Status: No, score=-4.9 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.0.1 X-Spam-Level: X-Spam-Checker-Version: SpamAssassin 3.0.1 (2004-10-22) on prxy.net X-TFF-CGPSA-Version: 1.4f2 X-prxy-Spam-Filter: Scanned For info, archives & UNSUBSCRIBE, see --------------------------------------------------- Stagecraft Digest, Issue #187 1. Re: Flat flats by "Paul Guncheon" 2. Re: Treb challange by "Stephen E. Rees" 3. Re: Treb challange by "Scott C. Parker" 4. Smoke pots: non pyro? by Scott Parker 5. Re: Treb challange by Steve Larson 6. Re: Flat flats by "Paul Schreiner" 7. Re: Treb challange by Herrick Goldman 8. Re: Treb challange by Dale Farmer 9. Re: Treb challange by "Waxler, Steve (waxlers)" 10. Nice prop by Herrick Goldman 11. Re: Ground Terminology: was cold water ground by FrankWood95 [at] aol.com 12. Re: NASA: Sound Filters Light by Bruce Purdy 13. Re: Smoke pots: non pyro? by Nathan Kahn/Look Solutions 14. Re: Nice prop by Greg Bierly 15. Re: Ground Terminology: was cold water ground by Samuel Jones 16. Re: Ground Terminology: was cold water ground by Jerry Durand 17. "German" Risers by David Kemp 18. Re: "German" Risers by "Elliott Family" 19. Drop shrinker/hardware question by "Mike Rock" 20. Re: "German" Risers by Mike Katz 21. Re: Ground Terminology: was cold water ground by FrankWood95 [at] aol.com 22. Re: Ground Terminology: was cold water ground by FrankWood95 [at] aol.com 23. Re: Drop shrinker/hardware question by "Tony Deeming" 24. Re: Ground Terminology: was cold water ground by "Tony Deeming" 25. Re: Nice prop by "Tony Deeming" 26. Re: Drop shrinker/hardware question by Stephen Litterst 27. Re: Drop shrinker/hardware question by "Mike Rock" 28. Questionable Terminology (nothing to do with grounds) by Heather Carter 29. Re: Ground Terminology: was cold water ground by Dale Farmer 30. Re: Questionable Terminology (nothing to do with grounds) by John Bracewell 31. Re: Questionable Terminology (nothing to do with grounds) by Michael Feinberg 32. Re: Questionable Terminology (nothing to do with grounds) by "Daniel O'Donnell" 33. Questionable Terminology (nothing to do with grounds) by "Daniel O'Donnell" 34. Re: Questionable Terminology (nothing to do with grounds) by "Dr. Randall W.A. Davidson" 35. Re: Drop shrinker/hardware question by "Tony Deeming" 36. Re: Drop shrinker/hardware question by "Tony Deeming" *** Please update the subject line of your reply to use the subject *** line of the message you are replying to! Please only reply to *** one message subject in each reply. ---------------------------------------------------------------------- Message-ID: <001901c4c33e$8b1eb290$0202a8c0 [at] MyLastPC> From: "Paul Guncheon" References: Subject: Re: Flat flats Date: Fri, 5 Nov 2004 03:51:24 -1000 <> Exactly true in my experience as well. I found the use of soft or "theatrical" style flats EXTREMELY rare. I've used the framing technique sometimes... but usually with hard covers. I would say that, in 30 + years in professional and amateur (as opposed academic) technical theatre, I built less than 15 soft flats of the traditional type. I have built a few more than that of a hard flat frame style with soft covering. My education was in design as a science rather than theatre so I never built them in school either. "Hard" flats (with frame on edge) are simply faster to build, more durable, and easier to work with. Ending a sentence with a preposition... something I'm proud of. and good at. Laters, Paul "I'll go over that bit in pen" remarked Tom. ------------------------------ Message-ID: <418B9D3D.5010109 [at] fredonia.edu> Date: Fri, 05 Nov 2004 10:33:17 -0500 From: "Stephen E. Rees" Reply-To: Rees [at] fredonia.edu Subject: Re: Treb challange References:

Thanks a lot Mark! I just spent an hour with this. Precious little actual work getting done now! :) Steve Rees, TD SUNY-Fredonia Fredonia, NY Mark O'Brien wrote: >> ------------------------------ Message-Id: <6.1.2.0.2.20041105104025.0432d3e0 [at] mail.hstech.org> Date: Fri, 05 Nov 2004 10:40:50 -0500 From: "Scott C. Parker" Subject: Re: Treb challange In-Reply-To: References:

Only an hour!?! You've got better control then I. At 10:33 AM 11/5/2004, you wrote: >For info, archives & UNSUBSCRIBE, see >--------------------------------------------------- > >Thanks a lot Mark! I just spent an hour with this. Precious little >actual work getting done now! :) > >Steve Rees, TD >SUNY-Fredonia >Fredonia, NY > > >Mark O'Brien wrote: > Scott C. Parker Production Designer/Technical Director High School Tech Production Web Site hstech~AT~hstech.org High Schoolers: come visit the HS Tech Web Site... http://www.hstech.org Our Mission: To assist High School Technical Theater students in their desire to learn about, create, and execute theatrical productions. ------------------------------ Message-ID: <90d9c99804110507474bfafb4f [at] mail.gmail.com> Date: Fri, 5 Nov 2004 10:47:14 -0500 From: Scott Parker Reply-To: Scott Parker Subject: Smoke pots: non pyro? My director wants a couple of "smoke pots" for Tempest. One pink and one blue. I'm looking for suggestions/solutions as to do this without pyro. Thanks, Scott -- Take care, Scott Scott C. Parker ------------------------------ Date: Fri, 05 Nov 2004 10:47:54 -0500 Subject: Re: Treb challange From: Steve Larson Message-ID: In-Reply-To: Remember the trebuchet on Northern Exposure. So cool! Steve on 11/4/04 5:10 PM, Mark O'Brien at marko [at] email.arizona.edu wrote: > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > One of my supplier sent me to an interesting game. > > Possibly we could build one in the scene shop, no? > > http://www.globalspec.com/trebuchet/ > > Mark O'Brien > Opera Technical Director > University of Arizona, School of Music > Tucson, AZ > 520/621-7025 > 520/591-1803 Mobile > > > ------------------------------ Subject: RE: Flat flats Date: Fri, 5 Nov 2004 10:53:47 -0500 Message-ID: <6E497ADB607656479C24E6D7BF6B505A74AD51 [at] exchange.rmwc.edu> From: "Paul Schreiner" > During the past 12 years (since I left academia where we=20 > built little flats) there has only been one time that I've=20 > built soft covered flats.>> >=20 > Exactly true in my experience as well. I found the use of=20 > soft or "theatrical" style flats EXTREMELY rare. I've used=20 > the framing technique sometimes... but usually with hard=20 > covers. I would say that, in 30 + years in professional and=20 > amateur (as opposed academic) technical theatre, I built less=20 > than 15 soft flats of the traditional type. =20 I'll echo this sentiment, though with slightly more than a "me too". Not only do I find them quicker to build, but the skills required to build a Hollywood flat are more often used in other areas of the shop as well. About the only time I ever use keystones are when I need a stick longer than 16' for some reason...so why spend the time needed to explain their construction and use basically just for that purpose instead of doing it on an ad hoc basis? I also consider the teaching of sizing and working with muslin more suitable to a scenic artistry class than basic stagecraft...but that's just me. > Ending a sentence with a preposition... >=20 > something I'm proud of. >=20 > and good at. And as Winston Churchill once noted, "that is the sort of English up with which I will not put!" ------------------------------ Date: Fri, 05 Nov 2004 10:57:03 -0500 Subject: Re: Treb challange From: Herrick Goldman Message-ID: In-Reply-To: I've got the formula for 650' down and can generally always hit the 250pt target! now I just need to master knocking that wall down in one shot!. On 11/5/04 10:33, "Stephen E. Rees" wrote: > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > Thanks a lot Mark! I just spent an hour with this. Precious little > actual work getting done now! :) > > Steve Rees, TD > SUNY-Fredonia > Fredonia, NY > > > Mark O'Brien wrote: >>> > > -- Herrick Goldman Lighting Designer, NYC www.HGLightingDesign.com "To the scores of silent alchemists who wreak their joy in darkness and in light bringing magic to life, we bow most humbly. "-CDS ------------------------------ Message-ID: <418BA36B.663EA69D [at] cybercom.net> Date: Fri, 05 Nov 2004 10:59:40 -0500 From: Dale Farmer Subject: Re: Treb challange References: Steve Larson wrote: > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > Remember the trebuchet on Northern Exposure. So cool! > > Steve A friend of mine has a pair of trebuchets setup in the back yard. A person sits in the swing seat to provide the weight. At summer parties we employ them to launch water balloons at each other. IN the wintertime, some really large snowballs get flung. While accuracy is low, there is lots of fun to be had. Ask around your SCA friends. --Dale ------------------------------ Message-ID: <886EF25AF8BEF64EB89A820EF84064FF0A09FDC6 [at] UCMAIL4> From: "Waxler, Steve (waxlers)" Subject: RE: Treb challange Date: Fri, 5 Nov 2004 11:04:03 -0500 Not only have I wasted my time, I have passed it on to my associates (and some students) so we will now waste their time, also. Steve Waxler Technical Director College Conservatory of Music University of Cincinnati Only an hour!?! You've got better control then I. ------------------------------ Date: Fri, 05 Nov 2004 11:45:30 -0500 Subject: Nice prop From: Herrick Goldman Message-ID: In-Reply-To: Not to distract you all from a good Trebuchet match but here's a fun Sound controlled prop.. Hey Unkie Bill maybe you can design 1/2 ton motors to work this way. I've seen you swear at them enough. -- Herrick Goldman Lighting Designer, NYC www.HGLightingDesign.com "To the scores of silent alchemists who wreak their joy in darkness and in light bringing magic to life, we bow most humbly. "-CDS ------------------------------ From: FrankWood95 [at] aol.com Message-ID: <79.37b5c4f6.2ebd1f82 [at] aol.com> Date: Fri, 5 Nov 2004 13:25:06 EST Subject: Re: Ground Terminology: was cold water ground In a message dated 05/11/04 05:07:01 GMT Standard Time, ladesigners [at] juno.com writes: > No, 1500 watts is approximately 12.5 amps. > /s/ Richard > > > a standard home blow dryer (hand held hot air hair dryer, > > about 1500W) . Given your US currents and voltages, that would > > be 50A. I was referring to the earth test current used in the UK, normally 25A. Since the earth wire will, under fault conditions, have to carry the instantaneous fault current until the fuse or breaker trips out, it needs proved with a high current. Fault currents may be thousands of amps for this brief time. Frank Wood ------------------------------ Date: Fri, 05 Nov 2004 13:47:37 -0500 Subject: Re: NASA: Sound Filters Light From: Bruce Purdy Message-ID: In-Reply-To: > SOUND FILTERS LIGHT > Russian researchers from the Scientific & Technical Center for Unique > Instrument-Making have developed a small, smart, and vibration-tolerant > spectrometer, which is equally reliable in outer space as it is in the > depths of the ocean. The development was performed with financial > support from the Russian Foundation for Basic Research (RFBR) and the > Foundation for Assistance to Small Innovative Enterprises (FASIE). I'm curious about one tangential item: Why do Russian agencies have names and corresponding acronyms in English? Bruce -- Bruce Purdy Technical Director Smith Opera House ------------------------------ Message-Id: <5.0.0.25.2.20041105124844.01763f88 [at] 212.86.129.164> Date: Fri, 05 Nov 2004 13:55:09 -0500 From: Nathan Kahn/Look Solutions Subject: Re: Smoke pots: non pyro? In-Reply-To: >My director wants a couple of "smoke pots" for Tempest. One pink and >one blue. I'm looking for suggestions/solutions as to do this without >pyro. There are two ways to ways to create a smoke-like effect -- dry particles and liquid droplets. Dry particles are usually created by burning something, i.e. pyro, although you could also disperse something like dust into the air. Liquid droplets usually come from a fog machine. To get colors, you need dry particles. (The only way to make colored fog is to color it with lighting.) Since you prefer not to use pyro, that leaves tossing some type of pink and blue powder into the air. Hope this helps, Nathan ------------------------------------------------------------------------ Look Solutions USA, Ltd. 114 W. Third St. Waynesboro, PA 17268 Toll-Free: 1-800-426-4189 Phone: 1-717-762-7490 Fax: 1-717-762-7366 Company Email: usa [at] looksolutions.com Personal Email: nk [at] looksolutions.com Web: www.looksolutions.com ------------------------------ In-Reply-To: References: Message-Id: <1DE56291-2F63-11D9-9F35-000D936BFA94 [at] dejazzd.com> From: Greg Bierly Subject: Re: Nice prop Date: Fri, 5 Nov 2004 14:44:33 -0500 Now I can't get anything done today. Once I checked out all of Kelly Dobson's stuff I had to go surf around the MIT staff and student websites. This is after I wasted a better part of the day playing with the Treb. Greg Bierly ------------------------------ Date: Fri, 5 Nov 2004 12:02:51 -0800 Subject: Re: Ground Terminology: was cold water ground From: Samuel Jones In-Reply-To: Message-Id: Do I have this right? You come up with 50A under fault conditions. Are fault conditions a short circuit? If so then the 1500W hair dryer can be taken out of the mix, right? As you say, fault conditions can carry huge currents until failure, so where does the 50A come from? Truly curious, Sam sjones [at] arts.ucla.edu ======================================================= On Friday, November 5, 2004, at 10:25 AM, FrankWood95 [at] aol.com wrote: > For info, archives & UNSUBSCRIBE, see > > --------------------------------------------------- > > In a message dated 05/11/04 05:07:01 GMT Standard Time, > ladesigners [at] juno.com > writes: > >> No, 1500 watts is approximately 12.5 amps. >> /s/ Richard >> >>> a standard home blow dryer (hand held hot air hair dryer, >>> about 1500W) . Given your US currents and voltages, that would >>> be 50A. > > I was referring to the earth test current used in the UK, normally > 25A. Since > the earth wire will, under fault conditions, have to carry the > instantaneous > fault current until the fuse or breaker trips out, it needs proved > with a high > current. Fault currents may be thousands of amps for this brief time. > > > Frank Wood > > ------------------------------ Message-Id: <6.1.2.0.0.20041105123510.00aaccf8 [at] localhost> Date: Fri, 05 Nov 2004 12:37:46 -0800 From: Jerry Durand Subject: Re: Ground Terminology: was cold water ground In-Reply-To: References:

At 12:02 PM 11/5/2004, you wrote: >Do I have this right? You come up with 50A under fault conditions. >Are fault conditions a short circuit? If so then the 1500W hair dryer can >be taken out of the mix, right? As you say, fault conditions can carry >huge currents until failure, so where does the 50A come from? The hair dryer is used by our local inspector because it gives a fairly good idea of the ground. I don't know any inspectors that actually dump a fault current through grounds to check them during a standard inspection. Now, I have worked with spot welders that draw enormous currents for one or two cycles of the AC line. Transformers REALLY don't like that. Ground can pulse quite a bit around those. ---------- Jerry Durand Durand Interstellar, Inc. 219 Oak Wood Way Los Gatos, California 95032-2523 USA tel: +1 408 356-3886 fax: +1 408 356-4659 web: www.interstellar.com ------------------------------ Message-Id: <5.2.1.1.2.20041105161307.01d70630 [at] po10.mit.edu> Date: Fri, 05 Nov 2004 16:18:27 -0500 From: David Kemp Subject: "German" Risers Hey guys, I wanted to get some railing for what we call our "German Risers." The only identifying marks read Buhnenbau R Schnakenberg of Muhle, Germany. A google search turned up Buhemba R Schnakenberg, but, with no web sites. Anybody heard of this manufacturer? Anybody know where I can purchase some rails for the units? thanx, Dave Kemp Supervisor of Technical Operations Kresge Auditorium, CAC Tuesday thru Saturday: 2 PM to 10 PM (617) 452-4533 (o) (617) 719-2096 (c) (617) 253- 8585 (f) ------------------------------ Message-Id: <200411052151.iA5LpYFC071177 [at] a.mail.peak.org> From: "Elliott Family" Subject: RE: "German" Risers Date: Fri, 5 Nov 2004 13:51:32 -0800 In-Reply-To: Dave, I believe you should START here (it's now B=FChnenbau Schnakenberg GmbH = & Co. KG): http://www.schnakenberg.de/ This will take some time to load. Then click on the British flag in the lower right corner. I hope this helps. Warmest regards, John Elliott Albany Civic Theater Albany, Oregon -----Original Message----- From: Stagecraft [mailto:stagecraft [at] theatrical.net] On Behalf Of David = Kemp Sent: Friday, November 05, 2004 1:18 PM To: Stagecraft Subject: "German" Risers For info, archives & UNSUBSCRIBE, see --------------------------------------------------- Hey guys, I wanted to get some railing for what we call our "German Risers." The=20 only identifying marks read Buhnenbau R Schnakenberg of Muhle, Germany. = A=20 google search turned up Buhemba R Schnakenberg, but, with no web=20 sites. Anybody heard of this manufacturer? Anybody know where I can=20 purchase some rails for the units? thanx, Dave Kemp Supervisor of Technical Operations Kresge Auditorium, CAC Tuesday thru Saturday: 2 PM to 10 PM (617) 452-4533 (o) (617) 719-2096 (c) (617) 253- 8585 (f) ------------------------------ Message-ID: <000901c4c388$89ae5a10$80fea8c0 [at] Fred> From: "Mike Rock" References: Subject: Drop shrinker/hardware question Date: Fri, 5 Nov 2004 16:41:06 -0600 My high school is doing West Side Story and we got three drops but on one of them it was either the wrong one or our TD gave the company the wrong number so the drop is too tall. Add that to the fact that there is only 3/4 fly space means that there is a good four or five feet show when it is taken to grid. My TD has the idea of using some pipe to make a 'batten' four or five feet above the ones we have now., so I have a few questions, is this safe? if it can be done safely what hardware to attach the pipe to the air craft cable? Yes there is at least 5 feet from the batten to the head blocks. Mike get off the props Rock ------------------------------ Message-Id: In-Reply-To: References: Date: Fri, 5 Nov 2004 17:45:54 -0500 From: Mike Katz Subject: Re: "German" Risers Cc: elliott [at] peak.org (Elliott Family) Or my friend and colleague Dave could yell over=20 to me on the other side of the campus and I would=20 have told him that the American distributor is=20 Steeldeck Inc. and the URL is www.steeldeck.com=20 or he can call 180050STAGE. oh and I have their=20 catalog. Mike At 1:51 PM -0800 11/5/04, Elliott Family wrote: >For info, archives & UNSUBSCRIBE, see >--------------------------------------------------- > >Dave, > >I believe you should START here (it's now B=FChnenbau Schnakenberg GmbH & C= o. >KG): http://www.schnakenberg.de/ This will take some time to load. Then >click on the British flag in the lower right corner. > >I hope this helps. > >Warmest regards, > >John Elliott >Albany Civic Theater >Albany, Oregon > > > >-----Original Message----- >From: Stagecraft [mailto:stagecraft [at] theatrical.net] On Behalf Of David Kemp >Sent: Friday, November 05, 2004 1:18 PM >To: Stagecraft >Subject: "German" Risers > >For info, archives & UNSUBSCRIBE, see >--------------------------------------------------- > >Hey guys, >I wanted to get some railing for what we call our "German Risers." The >only identifying marks read Buhnenbau R Schnakenberg of Muhle, Germany. A >google search turned up Buhemba R Schnakenberg, but, with no web >sites. Anybody heard of this manufacturer? Anybody know where I can >purchase some rails for the units? >thanx, > >Dave Kemp >Supervisor of Technical Operations >Kresge Auditorium, CAC > Tuesday thru Saturday: > 2 PM to 10 PM > (617) 452-4533 (o) > (617) 719-2096 (c) > (617) 253- 8585 (f) -- Mike Katz Technical Director MIT Theater Arts Rinaldi Tile Building 77 Mass Ave E33-101 Cambridge MA 02139 617.253.0824 mkatz [at] mit.edu "Lunacy Abounds" ------------------------------ From: FrankWood95 [at] aol.com Message-ID: <7b.377e842c.2ebd699b [at] aol.com> Date: Fri, 5 Nov 2004 18:41:15 EST Subject: Re: Ground Terminology: was cold water ground In a message dated 05/11/04 20:03:36 GMT Standard Time, sjones [at] ucla.edu writes: > Do I have this right? You come up with 50A under fault conditions. > Are fault conditions a short circuit? If so then the 1500W hair dryer > can be taken out of the mix, right? As you say, fault conditions can > carry huge currents until failure, so where does the 50A come from? > > Truly curious, Simply from the fact that we, in the UK, test our earth connections with this current. Given the lower voltage and higher current feeds normal in the US, I assumed a commensurate increase in the current test. Frank Wood ------------------------------ From: FrankWood95 [at] aol.com Message-ID: <8.5bae5140.2ebd6ac7 [at] aol.com> Date: Fri, 5 Nov 2004 18:46:15 EST Subject: Re: Ground Terminology: was cold water ground In a message dated 05/11/04 20:38:30 GMT Standard Time, jdurand [at] interstellar.com writes: > The hair dryer is used by our local inspector because it gives a fairly > good idea of the ground. I don't know any inspectors that actually dump a > fault current through grounds to check them during a standard inspection. No, but if the earth connection will pass a substantial current, it is probably good enough. In the UK, this is 25A: in the US I think 50A would be a better bet. > > Now, I have worked with spot welders that draw enormous currents for one or > two cycles of the AC line. Transformers REALLY don't like that. Ground > can pulse quite a bit around those. It can indeed. This is why having a clean earth for audio equipment is so important. Frank Wood ------------------------------ Message-ID: <006501c4c393$6d8ecb20$0a01a8c0 [at] Tony> From: "Tony Deeming" References:

Subject: Re: Drop shrinker/hardware question Date: Fri, 5 Nov 2004 23:59:01 -0000 One traditional way of solving this is to use a second barrel to which the cloth is attached, then use what we call barrel clamps - I'll try to draw an ascii pic in a mo. Basically what it does is allow you to roll up the top of the cloth around the secondary barrel, but the clamps then slide over the main barrel, which is still attached to the lines. You may need to remove the lines from the main barrel and slide the clamps over both at the same time. Alternatively, if you only have one barrel available, use that to roll to cloth onto then tie the lines to the clamps. Course - that only works if the bit you want to lose is at the top! Ynot _________ | O | <------ Top barrel (or lines) | | | | | \ | \ O | | <------- Bottom barrel with cloth - cloth feeds up and \______| | over the clamp return, and down thru the gap in the clamp. ----- Original Message ----- From: "Mike Rock" To: "Stagecraft" Sent: Friday, November 05, 2004 10:41 PM Subject: Drop shrinker/hardware question > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > My high school is doing West Side Story and we got three drops but on one of > them it was either the wrong one or our TD gave the company the wrong number > so the drop is too tall. Add that to the fact that there is only 3/4 fly > space means that there is a good four or five feet show when it is taken to > grid. My TD has the idea of using some pipe to make a 'batten' four or five > feet above the ones we have now., so I have a few questions, is this safe? > if it can be done safely what hardware to attach the pipe to the air craft > cable? Yes there is at least 5 feet from the batten to the head blocks. > > > Mike get off the props Rock > > > > ------------------------------ Message-ID: <006f01c4c393$dd55c0d0$0a01a8c0 [at] Tony> From: "Tony Deeming" References: Subject: Re: Ground Terminology: was cold water ground Date: Sat, 6 Nov 2004 00:02:09 -0000 ----- Original Message ----- From: To: "Stagecraft" Sent: Friday, November 05, 2004 11:41 PM Subject: Re: Ground Terminology: was cold water ground > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > In a message dated 05/11/04 20:03:36 GMT Standard Time, sjones [at] ucla.edu > writes: > > > Do I have this right? You come up with 50A under fault conditions. > > Are fault conditions a short circuit? If so then the 1500W hair dryer > > can be taken out of the mix, right? As you say, fault conditions can > > carry huge currents until failure, so where does the 50A come from? > > > > Truly curious, > > Simply from the fact that we, in the UK, test our earth connections with this > current. Given the lower voltage and higher current feeds normal in the US, I > assumed a commensurate increase in the current test. > > > > Frank Wood Hmm, I also seem to be unable to work out where on earth you manage to get 50A out of a1 500w dryer at 110v - I also get a figure of 12.5A max under correct load! What are your engineering calculations here, Frank???? OK, you mention 'fault conditions' - what conditions exactly? I'd say any fault condition on a hairdryer that causes it to pull 50A isn't going to do it for long, and the same fault will cause big problems on the breaker board whichever side of the pond you're on!!! ------------------------------ Message-ID: <008301c4c394$9b7bbb50$0a01a8c0 [at] Tony> From: "Tony Deeming" References: Subject: Re: Nice prop Date: Sat, 6 Nov 2004 00:07:25 -0000 ----- Original Message ----- From: "Herrick Goldman" To: "Stagecraft" Sent: Friday, November 05, 2004 4:45 PM Subject: Nice prop > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > Not to distract you all from a good Trebuchet match but here's a fun Sound > controlled prop.. > > > > Hey Unkie Bill maybe you can design 1/2 ton motors to work this way. I've > seen you swear at them enough. > > > -- > Herrick Goldman I gotta say I was expecting something.... well.... something a little more techie than the blood blender....! 8-)) Got a bit more interesting when she jumped onto the table, tho.....! 8-)))))))) Funny, there was always one hand out of shot.......................................... Ynot ------------------------------ Date: Fri, 05 Nov 2004 19:37:53 -0500 From: Stephen Litterst Subject: Re: Drop shrinker/hardware question Message-id: <418C1CE1.49EC2CAB [at] ithaca.edu> Organization: IC-Dept. of Theatre Arts References:

Tony Deeming wrote: > > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > One traditional way of solving this is to use a second barrel to which the > cloth is attached, then use what we call barrel clamps - I'll try to draw an > ascii pic in a mo. Basically what it does is allow you to roll up the top of > the cloth around the secondary barrel, but the clamps then slide over the > main barrel, which is still attached to the lines. You may need to remove > the lines from the main barrel and slide the clamps over both at the same > time. > Alternatively, if you only have one barrel available, use that to roll to > cloth onto then tie the lines to the clamps. > Course - that only works if the bit you want to lose is at the top! > > Ynot > _________ > | O | <------ Top barrel (or lines) > | | > | | > | \ | > \ O | | <------- Bottom barrel with cloth - cloth feeds > up and > \______| | over the clamp return, and down thru > the gap in the clamp. It sounds like Tony is describing a "Batten Clamp." There's a good illustration on pg 72 of the Backstage Handbook. I think this would probably be a better solution than trying to rig a pipe *above* the house batten. Not to mention that rigging above the house batten will significantly cut down on the out trim for that batten, which would exacerbate your problem. Steve L. -- Stephen C. Litterst Technical Supervisor Ithaca College Dept. of Theatre Arts 607/274-3947 slitterst [at] ithaca.edu ------------------------------ Message-ID: <001a01c4c3a4$db5db1a0$80fea8c0 [at] Fred> From: "Mike Rock" References:

Subject: Re: Drop shrinker/hardware question Date: Fri, 5 Nov 2004 20:03:49 -0600 Im not sure I follow a 100%, but is it that you have the drop go down around the a pipe back over the origainal batton then back down? For some reason it is not clicking right now. ------------------------------ Date: Fri, 5 Nov 2004 21:40:56 -0500 Subject: Questionable Terminology (nothing to do with grounds) From: Heather Carter Message-Id: <4909DBD9-2F9D-11D9-93F8-003065535662 [at] marlboro.edu> Hi. New here. Embarrassingly enough, I need to know the term for the small bolt on a lighting instrument C-clamp that allows the rotation of the instrument (the one that _doesn't_ risk the bugger dropping out of its yoke). You know, the one that breaks off all the time: the f-nut. What's its technical name, or the name they use for it in Catholic school, or whatever? I have been perfectly content calling it the f-nut until now, but now I have student help in the theater (at a school with no theater program) and we're going to be learning to focus soon. And they kiss their mothers with those mouths! Googled it, but I was getting an education I didn't want. Can someone help? Thanks. --Heather. ------------------------------ Message-ID: <418C4CAA.D933A243 [at] cybercom.net> Date: Fri, 05 Nov 2004 23:01:46 -0500 From: Dale Farmer Subject: Re: Ground Terminology: was cold water ground References:

Jerry Durand wrote: > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > At 12:02 PM 11/5/2004, you wrote: > >Do I have this right? You come up with 50A under fault conditions. > >Are fault conditions a short circuit? If so then the 1500W hair dryer can > >be taken out of the mix, right? As you say, fault conditions can carry > >huge currents until failure, so where does the 50A come from? > > The hair dryer is used by our local inspector because it gives a fairly > good idea of the ground. I don't know any inspectors that actually dump a > fault current through grounds to check them during a standard inspection. > > Now, I have worked with spot welders that draw enormous currents for one or > two cycles of the AC line. Transformers REALLY don't like that. Ground > can pulse quite a bit around those. And one of the tricks I was shown, but do NOT recommend, for blasting through corrosion on a nasty old ground rod is to put a hundred watt light bulb between a hot and the ground rod. If the bulb lights up nice and bright, you already have a good ground. If it is dim and flickers a bit, wait until it goes out or brightens up to full brightness, then disconnect. Better to have a locally licensed electrician come in to properly fix the grounding system than to try something dangerous like that. --Dale ------------------------------ Message-Id: <5.2.0.9.0.20041105234530.00b2acd8 [at] pop.lightlink.com> Date: Fri, 05 Nov 2004 23:47:50 -0500 From: John Bracewell Subject: Re: Questionable Terminology (nothing to do with grounds) In-Reply-To: >Embarrassingly enough, I need to know the term for the small bolt on a >lighting instrument C-clamp that allows the rotation of the instrument >(the one that _doesn't_ risk the bugger dropping out of its yoke). You >know, the one that breaks off all the time: the f-nut. What's its >technical name, or the name they use for it in Catholic school, or whatever? I have never heard one. Every place I've ever been has always called it the Jesus bolt--mainly because when you loosen it the behavior of the instrument generally makes the focuser use the holy name in an unseemly fashion. :-) --JLB ------------------------------ Message-Id: In-Reply-To: References: Date: Sat, 6 Nov 2004 00:02:39 -0500 From: Michael Feinberg Subject: Re: Questionable Terminology (nothing to do with grounds) >Embarrassingly enough, I need to know the term for the small bolt on >a lighting instrument C-clamp that allows the rotation of the >instrument (the one that _doesn't_ risk the bugger dropping out of >its yoke). You know, the one that breaks off all the time: the >f-nut. What's its technical name, or the name they use for it in >Catholic school, or whatever? Well, if you wanted to buy a replacement for one of those bolts from a hardware store, you'd be looking for a "square head set screw," but I don't think I've ever heard anyone call it that in a theatre. But "set screw" is probably a reasonably innocent but still descriptive name for it. -- -Michael Feinberg, CTS ------------------------------ In-Reply-To: References: Message-Id: From: "Daniel O'Donnell" Subject: Re: Questionable Terminology (nothing to do with grounds) Date: Sat, 6 Nov 2004 00:01:28 -0500 Try looking up "pan screw". Or "pan bolt". That might help On Nov 5, 2004, at 9:40 PM, Heather Carter wrote: > Embarrassingly enough, I need to know the term for the small bolt on a > lighting instrument C-clamp that allows the rotation of the instrument > (the one that _doesn't_ risk the bugger dropping out of its yoke). You > know, the one that breaks off all the time: the f-nut. What's its > technical name, or the name they use for it in Catholic school, or > whatever? > > I have been perfectly content calling it the f-nut until now, but now > I have student help in the theater (at a school with no theater > program) and we're going to be learning to focus soon. And they kiss > their mothers with those mouths! > > Googled it, but I was getting an education I didn't want. Can someone > help? --- Daniel R. O'Donnell dan [at] mystyk.com http://www.mystyk.com ------------------------------ Message-Id: <16C8F12C-2FB1-11D9-AD79-000D9329F45E [at] mystykworks.com> Reply-To: Stagecraft From: "Daniel O'Donnell" Subject: Questionable Terminology (nothing to do with grounds) Date: Sat, 6 Nov 2004 00:02:42 -0500 For info, archives & UNSUBSCRIBE, see --------------------------------------------------- Hi. New here. Embarrassingly enough, I need to know the term for the small bolt on a lighting instrument C-clamp that allows the rotation of the instrument (the one that _doesn't_ risk the bugger dropping out of its yoke). You know, the one that breaks off all the time: the f-nut. What's its technical name, or the name they use for it in Catholic school, or whatever? I have been perfectly content calling it the f-nut until now, but now I have student help in the theater (at a school with no theater program) and we're going to be learning to focus soon. And they kiss their mothers with those mouths! Googled it, but I was getting an education I didn't want. Can someone help? Thanks. --Heather. --- Daniel R. O'Donnell dan [at] mystyk.com http://www.mystyk.com ------------------------------ From: "Dr. Randall W.A. Davidson" Subject: RE: Questionable Terminology (nothing to do with grounds) Date: Sat, 6 Nov 2004 00:14:24 -0800 Message-ID: <002a01c4c3d8$a103a760$726dfea9 [at] DrDoomsComputer> In-Reply-To: Hoorah, and that is it. Well done. Doom ==================================================== A Masters Workshop for Entertainment Technicians, Riggers, Public Assembly Technicians, and Educational Performing Arts Personnel - Sponsored by Risk International & Associates, Inc. April 4, 5, 6, 2005 at ELCO Performing Arts Center, Elkhart, Indiana Brochure & Registration Form available at: www.riskit.com/workshops ==================================================== Risk International & Associates, Inc. - Dedicated to making the world a healthier & safer place. Website: www.riskit.com E-mail: rdavidson [at] riskit.com ==================================================== International Secondary Education Theater Safety Association (ISETSA) - Dedicated to the protection of every student in the performing arts. Website: www.isetsa.org E-mail: info [at] isetsa.org ==================================================== 960 E. Bonita #158, Pomona, CA 91767 Phone/Fax: (909) 625-5961 ==================================================== -----Original Message----- From: Stagecraft [mailto:stagecraft [at] theatrical.net] On Behalf Of Michael Feinberg Sent: Friday, November 05, 2004 9:03 PM To: Stagecraft Subject: Re: Questionable Terminology (nothing to do with grounds) For info, archives & UNSUBSCRIBE, see --------------------------------------------------- >Embarrassingly enough, I need to know the term for the small bolt on >a lighting instrument C-clamp that allows the rotation of the >instrument (the one that _doesn't_ risk the bugger dropping out of >its yoke). You know, the one that breaks off all the time: the >f-nut. What's its technical name, or the name they use for it in >Catholic school, or whatever? Well, if you wanted to buy a replacement for one of those bolts from a hardware store, you'd be looking for a "square head set screw," but I don't think I've ever heard anyone call it that in a theatre. But "set screw" is probably a reasonably innocent but still descriptive name for it. -- -Michael Feinberg, CTS ------------------------------ Message-ID: <004401c4c3e1$d2521870$0a01a8c0 [at] Tony> From: "Tony Deeming" References:

Subject: Re: Drop shrinker/hardware question Date: Sat, 6 Nov 2004 09:20:10 -0000 ----- Original Message ----- From: "Stephen Litterst" To: "Stagecraft" Sent: Saturday, November 06, 2004 12:37 AM Subject: Re: Drop shrinker/hardware question > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > Tony Deeming wrote: > > > > For info, archives & UNSUBSCRIBE, see > > --------------------------------------------------- > > > > One traditional way of solving this is to use a second barrel to which the > > cloth is attached, then use what we call barrel clamps - I'll try to draw an > > ascii pic in a mo. Basically what it does is allow you to roll up the top of > > the cloth around the secondary barrel, but the clamps then slide over the > > main barrel, which is still attached to the lines. You may need to remove > > the lines from the main barrel and slide the clamps over both at the same > > time. > > Alternatively, if you only have one barrel available, use that to roll to > > cloth onto then tie the lines to the clamps. > > Course - that only works if the bit you want to lose is at the top! > > > > Ynot > > _________ > > | O | <------ Top barrel (or lines) > > | | > > | | > > | \ | > > \ O | | <------- Bottom barrel with cloth - cloth feeds > > up and > > \______| | over the clamp return, and down thru > > the gap in the clamp. > > > It sounds like Tony is describing a "Batten Clamp." There's a good > illustration on pg 72 of the Backstage Handbook. I think this would > probably be a better solution than trying to rig a pipe *above* the > house batten. Not to mention that rigging above the house batten will > significantly cut down on the out trim for that batten, which would > exacerbate your problem. > > Steve L. > Yup - that's it in a nutshell! Didn't realise I hadn't actually called it a batten clamp/barrel clamp! 8-)) Ynot ------------------------------ Message-ID: <004c01c4c3e2$2dcb9b40$0a01a8c0 [at] Tony> From: "Tony Deeming" References:

Subject: Re: Drop shrinker/hardware question Date: Sat, 6 Nov 2004 09:22:44 -0000 ----- Original Message ----- From: "Mike Rock" To: "Stagecraft" Sent: Saturday, November 06, 2004 2:03 AM Subject: Re: Drop shrinker/hardware question > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > Im not sure I follow a 100%, but is it that you have the drop go down around > the a pipe back over the origainal batton then back down? For some reason it > is not clicking right now. > > The cloth only goes around ONE pipe - the one at the bottom. It then feeds up (in a clockwise direction in my ascii pic) over the top of the inner bit of the clamp, then down between the gap in the clamp to hang as normal. Now I've typed that it doesn't seem to make it any clearer!!! 8-(( It may help, tho! Ynot ------------------------------ End of Stagecraft Digest #187 *****************************