From kepisottlegione at gmail.com Thu May 15 15:09:40 2008 From: kepisottlegione at gmail.com (Sam Ettinger) Date: Thu May 15 15:09:48 2008 Subject: [dorkbotsocal-blabber] Propane burners Message-ID: Hey guys, I'm hoping someone out there is willing to help me ponder this project. I want to build a long tube with vents for burning propane, like the PVC Ruben's Tube minus speaker: http://blog.makezine.com/archive/2006/10/rubens_tube_sound_visualizatio.html I'll probably be making this out of metal pipe instead of PVC. I want to avoid fumes as much as possible because this may be used for culinary applications in the future. Regardless, my primary fear of the moment is that I will immolate or suffocate myself while using it. I'm looking for those flow controllers attached to gas barbecues, but I don't know their exact purpose or even if the safety features on modern propane tanks are sufficient. Does anyone out there have experience in this area? Thanks, Sam Ettinger http://diybaumkuchen.blogspot.com -------------- next part -------------- An HTML attachment was scrubbed... URL: http://music.columbia.edu/pipermail/dorkbotsocal-blabber/attachments/20080515/da51aa80/attachment.html From jp at jpixl.net Thu May 15 16:00:37 2008 From: jp at jpixl.net (jp@jpixl.net) Date: Thu May 15 16:00:46 2008 Subject: [dorkbotsocal-blabber] Fireproof wire mesh bowl Message-ID: <20080515130037.62a685f431360d5f7808c08f87ee8a48.880175a53a.wbe@email.secureserver.net> An HTML attachment was scrubbed... URL: http://music.columbia.edu/pipermail/dorkbotsocal-blabber/attachments/20080515/ad4281cf/attachment.html From tedwards at gmail.com Thu May 15 17:50:24 2008 From: tedwards at gmail.com (Thomas Edwards) Date: Thu May 15 17:50:42 2008 Subject: [dorkbotsocal-blabber] Fireproof wire mesh bowl In-Reply-To: <20080515130037.62a685f431360d5f7808c08f87ee8a48.880175a53a.wbe@email.secureserver.net> References: <20080515130037.62a685f431360d5f7808c08f87ee8a48.880175a53a.wbe@email.secureserver.net> Message-ID: <2fd1fa350805151450k1d0fc50ao278012d86687ef0@mail.gmail.com> You can purchase heavy mesh screen intended for bunsen burner work here: http://www.shorinternational.com/AlcoholBunsen.htm Does this need to support much weight? Even a small propane flame can heat up fine mesh to the weakening temperature (if steel is showing any purple, red, or orange color it is over 250 C and weakened significantly), thus the use of heavier mesh. Or you could go all the way to Titanium (melts at 1668 C) mesh: http://www.alibaba.com/showroom/Titanium_Mesh.html -Thomas http://www.t11s.com On Thu, May 15, 2008 at 1:00 PM, wrote: > Can anyone help me out with this? I'm in need of a small, fireproof, > wire-mesh basket for a project I'm building. It needs to withstand direct > flame from a propane camping stove. About the size of a baseball hat. I'm > looking for something to buy, that could be on the materials list for a > project, rather than do any wire basket weaving! > (I also posted this on my blog, sorry for the cross-post.) > Thank you, > John > _____________ > John Edgar Park > JPIXL.NET From jp at jpixl.net Thu May 15 18:11:43 2008 From: jp at jpixl.net (jp@jpixl.net) Date: Thu May 15 18:11:53 2008 Subject: [dorkbotsocal-blabber] Fireproof wire mesh bowl Message-ID: <20080515151143.62a685f431360d5f7808c08f87ee8a48.c628c2868e.wbe@email.secureserver.net> An HTML attachment was scrubbed... URL: http://music.columbia.edu/pipermail/dorkbotsocal-blabber/attachments/20080515/18d05164/attachment.html From tedwards at gmail.com Thu May 15 19:04:08 2008 From: tedwards at gmail.com (Thomas Edwards) Date: Thu May 15 19:04:16 2008 Subject: [dorkbotsocal-blabber] Fireproof wire mesh bowl In-Reply-To: <20080515151143.62a685f431360d5f7808c08f87ee8a48.c628c2868e.wbe@email.secureserver.net> References: <20080515151143.62a685f431360d5f7808c08f87ee8a48.c628c2868e.wbe@email.secureserver.net> Message-ID: <2fd1fa350805151604u79d925ddg272f4972138b5d58@mail.gmail.com> John, Actually my father was a chemist - when he needed to heat things up to high temperatures, he'd use a crucible like these: http://www.budgetcastingsupply.com/Crucibles.php Good luck with the roaster! -Thomas http://www.t11s.com On Thu, May 15, 2008 at 3:11 PM, wrote: > Thanks Thomas. It'll be for a small (1/4 - 1/2 lb.) coffee roaster like the > one Bill Cotton did in Make Magazine. He ran into the weakening problem, > too, at first and ended up with the same solution you're suggesting. He > built his own bowl out of appropriately heat resistant mesh. I may be > presenting this as a simpler project for home roasters and was hoping to > avoid them doing the bowl fabrication. Don't chemists need pre-built > colanders?! > > I may test it to see if a steel bowl colander (not mesh, but with holes in > it) would work instead. > > Yours, > John > > _________ > JPIXL.NET > > -------- Original Message -------- > Subject: Re: [dorkbotsocal-blabber] Fireproof wire mesh bowl > From: "Thomas Edwards" > Date: Thu, May 15, 2008 2:50 pm > To: dorkbotsocal-blabber > > You can purchase heavy mesh screen intended for bunsen burner work here: > > http://www.shorinternational.com/AlcoholBunsen.htm > > Does this need to support much weight? Even a small propane flame can > heat up fine mesh to the weakening temperature (if steel is showing > any purple, red, or orange color it is over 250 C and weakened > significantly), thus the use of heavier mesh. Or you could go all > the way to Titanium (melts at 1668 C) mesh: > > http://www.alibaba.com/showroom/Titanium_Mesh.html > > -Thomas > > http://www.t11s.com > > > On Thu, May 15, 2008 at 1:00 PM, wrote: >> Can anyone help me out with this? I'm in need of a small, fireproof, >> wire-mesh basket for a project I'm building. It needs to withstand direct >> flame from a propane camping stove. About the size of a baseball hat. I'm >> looking for something to buy, that could be on the materials list for a >> project, rather than do any wire basket weaving! >> (I also posted this on my blog, sorry for the cross-post.) >> Thank you, >> John >> _____________ >> John Edgar Park >> JPIXL.NET > ........................................................................ > .........dorkbot: people doing strange things with electricity.......... > ..........................http://dorkbot.org............................ > ........................................................................ > > ........................................................................ > .........dorkbot: people doing strange things with electricity.......... > ..........................http://dorkbot.org............................ > ........................................................................ > From arclight at gmail.com Fri May 16 02:52:38 2008 From: arclight at gmail.com (john arclight) Date: Fri May 16 02:53:00 2008 Subject: [dorkbotsocal-blabber] Propane burners In-Reply-To: References: Message-ID: <769756f50805152352u186bea68m6353d9d6f620f78a@mail.gmail.com> You probably want a high-pressure, adjustable regulator. Any propane dealer should carry these. I bought one for my foundry that is adjustable. For the pipe, you could use Aluminum irrigation pipe (lightweight, reasonably cheap), black steel pipe (heavy) or copper (light, but expensive in large sizes). You will probably also need a set of small orifice drills, as the burner holes for propane/gas are usually very small. If anyone is coming to the Layer One hacker convention this weekend in Pasadena, we can discuss projects. We have a well-equipped shop that y'all can use. http://layerone.info Hope to see some of you there! Arclight On Thu, May 15, 2008 at 12:09 PM, Sam Ettinger wrote: > Hey guys, I'm hoping someone out there is willing to help me ponder this > project. I want to build a long tube with vents for burning propane, like > the PVC Ruben's Tube minus speaker: > http://blog.makezine.com/archive/2006/10/rubens_tube_sound_visualizatio.html > > I'll probably be making this out of metal pipe instead of PVC. I want to > avoid fumes as much as possible because this may be used for culinary > applications in the future. Regardless, my primary fear of the moment is > that I will immolate or suffocate myself while using it. I'm looking for > those flow controllers attached to gas barbecues, but I don't know their > exact purpose or even if the safety features on modern propane tanks are > sufficient. Does anyone out there have experience in this area? > > Thanks, > Sam Ettinger > http://diybaumkuchen.blogspot.com > > ........................................................................ > .........dorkbot: people doing strange things with electricity.......... > ..........................http://dorkbot.org............................ > ........................................................................ > From arclight at gmail.com Fri May 16 02:54:46 2008 From: arclight at gmail.com (john arclight) Date: Fri May 16 02:54:57 2008 Subject: [dorkbotsocal-blabber] Fireproof wire mesh bowl In-Reply-To: <2fd1fa350805151604u79d925ddg272f4972138b5d58@mail.gmail.com> References: <20080515151143.62a685f431360d5f7808c08f87ee8a48.c628c2868e.wbe@email.secureserver.net> <2fd1fa350805151604u79d925ddg272f4972138b5d58@mail.gmail.com> Message-ID: <769756f50805152354h53b17ce6oc13f72454afc2ac7@mail.gmail.com> You might also want to try a copper basket. While its melting point is lower than steel, it conducts heat extremely well. It's actually hard to weld because of this feature. Arclight On Thu, May 15, 2008 at 4:04 PM, Thomas Edwards wrote: > John, > > Actually my father was a chemist - when he needed to heat things up to > high temperatures, he'd use a crucible like these: > > http://www.budgetcastingsupply.com/Crucibles.php > > Good luck with the roaster! > > > -Thomas > http://www.t11s.com > > > > On Thu, May 15, 2008 at 3:11 PM, wrote: > > Thanks Thomas. It'll be for a small (1/4 - 1/2 lb.) coffee roaster like the > > one Bill Cotton did in Make Magazine. He ran into the weakening problem, > > too, at first and ended up with the same solution you're suggesting. He > > built his own bowl out of appropriately heat resistant mesh. I may be > > presenting this as a simpler project for home roasters and was hoping to > > avoid them doing the bowl fabrication. Don't chemists need pre-built > > colanders?! > > > > I may test it to see if a steel bowl colander (not mesh, but with holes in > > it) would work instead. > > > > Yours, > > John > > > > _________ > > JPIXL.NET > > > > -------- Original Message -------- > > Subject: Re: [dorkbotsocal-blabber] Fireproof wire mesh bowl > > From: "Thomas Edwards" > > Date: Thu, May 15, 2008 2:50 pm > > To: dorkbotsocal-blabber > > > > You can purchase heavy mesh screen intended for bunsen burner work here: > > > > http://www.shorinternational.com/AlcoholBunsen.htm > > > > Does this need to support much weight? Even a small propane flame can > > heat up fine mesh to the weakening temperature (if steel is showing > > any purple, red, or orange color it is over 250 C and weakened > > significantly), thus the use of heavier mesh. Or you could go all > > the way to Titanium (melts at 1668 C) mesh: > > > > http://www.alibaba.com/showroom/Titanium_Mesh.html > > > > -Thomas > > > > http://www.t11s.com > > > > > > On Thu, May 15, 2008 at 1:00 PM, wrote: > >> Can anyone help me out with this? I'm in need of a small, fireproof, > >> wire-mesh basket for a project I'm building. It needs to withstand direct > >> flame from a propane camping stove. About the size of a baseball hat. I'm > >> looking for something to buy, that could be on the materials list for a > >> project, rather than do any wire basket weaving! > >> (I also posted this on my blog, sorry for the cross-post.) > >> Thank you, > >> John > >> _____________ > >> John Edgar Park > >> JPIXL.NET > > ........................................................................ > > .........dorkbot: people doing strange things with electricity.......... > > ..........................http://dorkbot.org............................ > > ........................................................................ > > > > ........................................................................ > > .........dorkbot: people doing strange things with electricity.......... > > ..........................http://dorkbot.org............................ > > ........................................................................ > > > ........................................................................ > .........dorkbot: people doing strange things with electricity.......... > ..........................http://dorkbot.org............................ > ........................................................................ > From jp at jpixl.net Fri May 16 10:21:00 2008 From: jp at jpixl.net (jp@jpixl.net) Date: Fri May 16 10:21:21 2008 Subject: [dorkbotsocal-blabber] Fireproof wire mesh bowl Message-ID: <20080516072100.62a685f431360d5f7808c08f87ee8a48.4f55151b78.wbe@email.secureserver.net> John, that's a wonderful suggestion. I love the way copper looks in the context of coffee roasting, so I'll certainly give it a try! A quick search reveals that some of the copper colanders are lined with nickel or tin or something, and some have an exterior varnish. Those are mostly decorative. Seems like many copper mixing bowls for whipping up egg whites for baking do not have any lining or varnish. I wonder what it takes to remove lining/varnish from copper. Or if it's easier to drill a zillion holes in a mixing bowl... -JP _________ JPIXL.NET > -------- Original Message -------- > Subject: Re: [dorkbotsocal-blabber] Fireproof wire mesh bowl > From: "john arclight" > Date: Thu, May 15, 2008 11:54 pm > To: dorkbotsocal-blabber > > > You might also want to try a copper basket. While its melting point > is lower than steel, it conducts heat extremely well. It's actually > hard to weld because of this feature. > > Arclight > > On Thu, May 15, 2008 at 4:04 PM, Thomas Edwards wrote: > > John, > > > > Actually my father was a chemist - when he needed to heat things up to > > high temperatures, he'd use a crucible like these: > > > > http://www.budgetcastingsupply.com/Crucibles.php > > > > Good luck with the roaster! > > > > > > -Thomas > > http://www.t11s.com > > > > > > > > On Thu, May 15, 2008 at 3:11 PM, wrote: > > > Thanks Thomas. It'll be for a small (1/4 - 1/2 lb.) coffee roaster like the > > > one Bill Cotton did in Make Magazine. He ran into the weakening problem, > > > too, at first and ended up with the same solution you're suggesting. He > > > built his own bowl out of appropriately heat resistant mesh. I may be > > > presenting this as a simpler project for home roasters and was hoping to > > > avoid them doing the bowl fabrication. Don't chemists need pre-built > > > colanders?! > > > > > > I may test it to see if a steel bowl colander (not mesh, but with holes in > > > it) would work instead. > > > > > > Yours, > > > John > > > > > > _________ > > > JPIXL.NET > > > > > > -------- Original Message -------- > > > Subject: Re: [dorkbotsocal-blabber] Fireproof wire mesh bowl > > > From: "Thomas Edwards" > > > Date: Thu, May 15, 2008 2:50 pm > > > To: dorkbotsocal-blabber > > > > > > You can purchase heavy mesh screen intended for bunsen burner work here: > > > > > > http://www.shorinternational.com/AlcoholBunsen.htm > > > > > > Does this need to support much weight? Even a small propane flame can > > > heat up fine mesh to the weakening temperature (if steel is showing > > > any purple, red, or orange color it is over 250 C and weakened > > > significantly), thus the use of heavier mesh. Or you could go all > > > the way to Titanium (melts at 1668 C) mesh: > > > > > > http://www.alibaba.com/showroom/Titanium_Mesh.html > > > > > > -Thomas > > > > > > http://www.t11s.com > > > > > > > > > On Thu, May 15, 2008 at 1:00 PM, wrote: > > >> Can anyone help me out with this? I'm in need of a small, fireproof, > > >> wire-mesh basket for a project I'm building. It needs to withstand direct > > >> flame from a propane camping stove. About the size of a baseball hat. I'm > > >> looking for something to buy, that could be on the materials list for a > > >> project, rather than do any wire basket weaving! > > >> (I also posted this on my blog, sorry for the cross-post.) > > >> Thank you, > > >> John > > >> _____________ > > >> John Edgar Park > > >> JPIXL.NET > > > ........................................................................ > > > .........dorkbot: people doing strange things with electricity.......... > > > ..........................http://dorkbot.org............................ > > > ........................................................................ > > > > > > ........................................................................ > > > .........dorkbot: people doing strange things with electricity.......... > > > ..........................http://dorkbot.org............................ > > > ........................................................................ > > > > > ........................................................................ > > .........dorkbot: people doing strange things with electricity.......... > > ..........................http://dorkbot.org............................ > > ........................................................................ > > > ........................................................................ > .........dorkbot: people doing strange things with electricity.......... > ..........................http://dorkbot.org............................ > ........................................................................ From tedwards at gmail.com Sun May 25 15:49:10 2008 From: tedwards at gmail.com (Thomas Edwards) Date: Sun May 25 15:49:34 2008 Subject: [dorkbotsocal-blabber] June 10 "Maker Night" @ LA SIGGRAPH Message-ID: <2fd1fa350805251249p6881b81hf9b03da0d6e0aec0@mail.gmail.com> http://la.siggraph.org/html/ 2nd Tuesday, June 10th, 2008 - LA SIGGRAPH meeting "Maker Night" with Jeff Boynton & MarkFrauenfelder "The Rise and Fall and Ride of Modern Making" with Jeff Boynton & Mark Frauenfelder Featuring a Performance by the Circuit Bender, Jeff Boynton. [the website seems to indicate that these events are generally free to Los Angeles ACM SIGGRAPH members and $20 for non-members... I am not associated with this event, just passing on the info. -Thomas http://www.t11s.com] From tedwards at gmail.com Thu May 29 13:30:17 2008 From: tedwards at gmail.com (Thomas Edwards) Date: Thu May 29 13:30:26 2008 Subject: [dorkbotsocal-blabber] LA SIGGRAPH mtg - better info Message-ID: <2fd1fa350805291030p1067afe7le9f9d91373460f2c@mail.gmail.com> [I'm not directly associated with this event, but it sounds cool...] http://upcoming.yahoo.com/event/710642/ Tuesday, June 10, 2008 6:30 PM - 10:30 PM Writers Boot Camp - Bergamot Station 2525 Michigan Ave Santa Monica, California 90404 DESCRIPTION Sometimes it seems like the members of ACM SIGGRAPH (Get ready for a long acronym: Association for Computing Machinery Special Interest Group on Computer Graphics) don't know about the local Maker culture in Los Angeles and I'm not sure how much the local Makers around Los Angeles know about SIGGRAPH. As the Chair of the local Los Angeles chapter of ACM SIGGRAPH I'd like to bridge the gap and extend and invitation to interested folks to come on down to Santa Monica and participate in a sort of science fair social hour and maker night that I'm hosting at Bergamot Station on Tuesday, June 10th. If you've got a home brew electronics/robotics/whirring/buzzing/blinking/tactile art project/plaything you'd like to share then get in touch with me via makers@agentxray.com to reserve a space. Participants get free admission and we'll feed you. We've got an exciting evening planned. Boing Boing's own Mark Frauenfelder is giving a talk on "The Rise and Fall and Ride of Modern Making" and we're featuring a circuit bending performance by Jeff Boyton who's going to create an immersive audio environment honed from his hand crafted electronic instruments built from leftover consumer electronic detritus. LA SIGGRAPH presents "Maker Night" When: Tuesday, June 10th, 2008 5:30 pm - Makers Load In and Set up 6:30-7:30pm - Social Hour Science Fair 7:30-10:30pm - Presentation Where: The Writers Boot Camp at Bergamot Station 2525 Michigan Ave., Bldg #1 Santa Monica, CA, 90404 Contact: makers@agentxray.com