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Old 05-13-2011, 03:29 PM   #1 (permalink)
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PA project clamping bracket - UPDATED 5-16

[EDIT 5-16-2011]

After a couple attempts, I have determined, conclusively, that I am not a machinist. So, I grabbed a copy of AutoCAD. Can someone crank this out for me? I have also attached a PDF file containing the design, and can get the .dwg file to you.

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File Type: pdf 2d_bracket.pdf (27.1 KB, 1 views)
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Last edited by LagShock; 05-16-2011 at 08:19 PM.
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Old 05-14-2011, 08:37 PM   #2 (permalink)
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Ask BOS, he can do it in delrin most likely
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The prototype is usually the hardest - then come the refinements then the ooohs and the aaaahs but they are always preceded by the !#@!@#! and the !#!!#@!% and the GAAAAAAHS
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Old 05-14-2011, 10:55 PM   #3 (permalink)
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Thanks slinger. I actually went out and gave this a shot today since I didn't see any response. The .8-.9 holes were murder on my poor little 2/3HP drill press. It turned out...pretty ugly, but functional.
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Old 05-15-2011, 12:35 AM   #4 (permalink)
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O really, guess its time for a bigger drill press then

What material did you use. I would have tried with wood first, just to see it


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Quote:
Originally Posted by Stitch View Post
The prototype is usually the hardest - then come the refinements then the ooohs and the aaaahs but they are always preceded by the !#@!@#! and the !#!!#@!% and the GAAAAAAHS
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Old 05-15-2011, 12:51 AM   #5 (permalink)
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As I was working on it, I came up with about half a dozen things I needed to do differently the next time around. Ive got enough material for 5-6 more, so eventually ill do up a nicer one. I didn't actually have a 1/2" bit for the bottom hole, so I started with a 3/8" and opened it up with a bench grinder. It is set up to clamp at the top and bottom; one side is threaded for 6-32 and the other is opened up enough for the screw to pass through.

I think Ill have more luck with the 13/16" and 7/8" bits if I work my way up with smaller bits first.


I used 1/4" steel; wood would have been fine for this, but then it'd be made out of wood, and I wouldn't have had to buy any new tools. And it'd be so light....
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Last edited by LagShock; 05-15-2011 at 01:25 AM.
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Old 05-15-2011, 02:28 AM   #6 (permalink)
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I just meant wood for prototyping then make it out of steel , or delrin or something
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Originally Posted by Stitch View Post
The prototype is usually the hardest - then come the refinements then the ooohs and the aaaahs but they are always preceded by the !#@!@#! and the !#!!#@!% and the GAAAAAAHS
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Old 05-15-2011, 01:05 PM   #7 (permalink)
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Gave it another shot this morning. Its a good thing I don't do this for a living, Id starve to death.
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Old 05-18-2011, 02:33 PM   #8 (permalink)
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Ill say this some of the dimensions are going to be crazy to match up perfectly... I mean you have it out to 10-thou
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Old 05-18-2011, 04:07 PM   #9 (permalink)
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Ill say this some of the dimensions are going to be crazy to match up perfectly... I mean you have it out to 10-thou
Thanks a lot for the input, this is the first time Ive actually done something like this. There definitely isn't any need for that kind of precision, Ill upload an updated copy soon.
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Old 05-18-2011, 07:56 PM   #10 (permalink)
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This would be no problem to do but there are a few questions I have on this.

As BigOldSkool stated, your print is holding a + or - of .0005 limit.

For what your using this for a + or - of .010 or .005 limit would work fine.

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