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Boro Room -- For Boro-related tips, techniques, and questions. |
2011-02-13, 5:59pm
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Senior Member
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Join Date: May 31, 2009
Posts: 368
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It's been a while since I've been on here.
Anyway, I've been working on the tailstock. Next comes the chucks and assembling the headstock. I am going to do the headstock first and get it working so I know what to expect from the tailstock, which will be harder to get perfect. I will also have a semi-functioning lathe once I get the headstock done. This week, I'm going to cast the braces for the headstock and machine the chucks to size. This has to be done first so I know what size to make the holes on the braces. Pictures coming soon!
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Melting boro with a National 3A and and two Devilbiss 5lpm 10psi concentrators.
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2011-02-14, 2:55pm
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Senior Member
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Join Date: Feb 05, 2011
Location: Upstate NY
Posts: 144
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I've thought about how one might make a glass lathe and here's my take. The stresses involved are way less than turning metal, and converting a metal or wood lathe seems less than optimum. I'd have a look at the offerings from a company like MiniTec, 80/20 or Bausch, who all make aluminum extrusions. The MiniTec catalog shows all sorts of configurations using standard parts. All sorts of industrial setups are made from this stuff. It's not cheap, but in the grand scheme of things it might prove to be very economical compared to alternatives, and very flexible from a design standpoint. I'd build the lathe frame with that, then figure out how to sync the chucks, either mechanically or servo. My guess is that minor sync errors would be pretty serious, resulting in large pieces of glass turning into smaller ones.
Best,
Conrad
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2011-02-14, 6:25pm
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Senior Member
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Join Date: May 31, 2009
Posts: 368
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I got a lot of advice to use servos, but I decided not for exactly that reason. Even a degree every 10 minutes would be noticeable. Pictures tomorrow!
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Melting boro with a National 3A and and two Devilbiss 5lpm 10psi concentrators.
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2011-03-12, 12:20am
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Senior Member
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Join Date: May 31, 2009
Posts: 368
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I received the bearings I ordered on Ebay today. $30 for 4 things that are normally $65 a piece.
Here are some pics. They are Nachi 6016 2NSL bearings made in Japan.
125mm od x 80mm id x 22mm thick= about 5 in od x 3 1/8 id x 7/8in thick
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Melting boro with a National 3A and and two Devilbiss 5lpm 10psi concentrators.
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2011-03-12, 1:57pm
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Senior Member
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Join Date: Feb 05, 2011
Location: Upstate NY
Posts: 144
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Mmmm, big, strong like bull
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2011-03-12, 5:06pm
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Join Date: Jan 07, 2008
Location: Gloucestershire, UK
Posts: 714
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Well, I don't really understand anything on this thread - but its really interesting
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Bob Cat and 2 oxycons
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2011-03-12, 5:25pm
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Senior Member
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Join Date: Feb 05, 2011
Location: Upstate NY
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Though inaccessible to me on my dial-up, there are some fantastic videos on u-tube showing how glass lathes are used. A search should turn them up easily. Glass lathes are almost indispensable for scientific glass work.
CH
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2011-12-11, 5:19pm
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Senior Member
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Join Date: May 31, 2009
Posts: 368
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I am not currently working on my lathe, but I want to share the designs I have made. See the first post for a link to them.
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Melting boro with a National 3A and and two Devilbiss 5lpm 10psi concentrators.
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2011-12-12, 8:03am
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newbie
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Join Date: Feb 18, 2007
Location: The land of Oz!
Posts: 465
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This is my lathe, it's hard to find any glassblowing lathes over here, not to mention large ones (this thing is a beast), and freight from overseas is a killer so it was heaps cheaper to convert a metal lathe for the purpose. Works beautifully!
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Running a To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. by Miema on LPG and oxy bottles and a GTT Mirage.
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2011-12-28, 11:09am
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Senior Member
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Join Date: Feb 09, 2006
Posts: 219
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I currently and working on my own lathe projects. Have stuff at the cnc machine shop curently so once they are back i will start my own thread but kudos to you for building your own as well. Im curious why you made the choice to use a non supported linear rail? Also check out vxb.com they sell a lot of large bearings and linear compontets for a good price. Would love to see more pics of your current progress. The two machines i am building will have a capacity of 75mm on the smaller and 120mm on the larger.
As far as buying a glass lathe for 1500 thats pretty unrealistic. My first cost me $7200. A nice set of scroll chucks can run 2-3k. So picking up a lathe for 1500 might be doable but probably without chucks or really small with no pass through size of relevance or will be plain beat to shit and out of tollerance.
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AWESOME-SAUCE. The king of ban..........Proud member of "you people" of 9/13/11 - record post count, record view count.
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2012-01-09, 5:55am
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Senior Member
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Join Date: Oct 12, 2009
Location: Surfside Beach, South Carolina
Posts: 98
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VertigoGlass over on talkglass.com is doing what your doing. Might want to read up or contact and collab? Just noticed, thought I would share, GL
Chad
http://www.talkglass.com/forum/showthread.php?t=42116
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