The Offcial Machinist Thread: Revised 01/04/2014

Potatoes last one shot, so build reusable! Discuss ammo designs and ideas. Tough to find cannon part or questions? Ask here!
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clemsonguy1125
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Sat Sep 03, 2011 10:12 am

Ok thanks, to make a accurate sketch I would have to buy a few parts and take some measurements. Before I start buying parts, I was just going to try and get a general price quote in case it ended up being more than I wanted to spend. I was thinking it would probably be about 10 bucks plus material costs. Is this a fair price.
That is all.
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jackssmirkingrevenge
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Sat Sep 03, 2011 10:38 am

clemsonguy1125 wrote:I was thinking it would probably be about 10 bucks plus material costs.
I would say 10 bucks including material costs, it really isn't that complicated to turn.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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clemsonguy1125
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Sat Sep 03, 2011 10:43 am

Ok thanks, would you reccomend steel over aluminum for 300 psi. Im l
That is all.
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jackssmirkingrevenge
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Sat Sep 03, 2011 10:55 am

clemsonguy1125 wrote:Ok thanks, would you reccomend steel over aluminum for 300 psi.
Definitely steel, perhaps brass if you thickened the 1/8" section. Aluminium will fail in such a high pressure application.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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irisher
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Sat Sep 03, 2011 1:25 pm

What you guys recommend to get .608 hole in aluminum 2.5" long? My boring bar wont make a hole that deep.
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jrrdw
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Sat Sep 03, 2011 2:58 pm

Is the boring bar the only kind of bore you have?
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Gippeto
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Sat Sep 03, 2011 3:01 pm

Don't have the "right" one...make it. :)


http://www.truetex.com/boring.htm
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ramses
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Sat Sep 03, 2011 9:05 pm

get a new boring bar. I suppose you could attach an end mill to the tool post and use that as a boring bar, but the idea is the same.

I guess you could also use a big drill and/or reamer. The boring bar will be cheaper,
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warhead052
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Sat Sep 03, 2011 9:27 pm

Fnord wrote:Warhead,

Don't you think you could get the bulk of your project done with some washers and a drilled-out threaded rod?
Even if you try and totally screw it up, how much will it set you back, $5-10?
Seriously, why did I not think of that? I guess I can give it a shot.
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Gun Freak
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Sun Oct 02, 2011 2:36 pm

Small part here. Aluminum... can be shipped in an envelope. Price quote?
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Sun Oct 02, 2011 2:40 pm

3 bucks posted if you're not in a hurry ;)
hectmarr wrote:You have to make many weapons, because this field is long and short life
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jrrdw
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Sun Oct 02, 2011 3:03 pm

Is there sapossed to be a offset in the centering of the 6MM opening or are your drawing skills just slightly better then mine? :lol:
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Gun Freak
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Sun Oct 02, 2011 3:06 pm

Oops I didn't even notice, JRRDW... I'm sure JSR will center it lol. I'm not used to drawing in the Meters template in sketch up so it got skewed...

JSR... DEAL!! :D Are your tools metric?
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Sun Oct 02, 2011 3:10 pm

Gun Freak wrote:JSR... DEAL!! :D Are your tools metric?
Yep.

You'll just have to bear with me for a few days until those accursed bolts arrive and I can mount the mill and organise my work area, hopefully by next weekend.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Sun Oct 02, 2011 3:10 pm

All tools found in the epoxycave are uni-measurable!
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