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The Offcial Machinist Thread: Revised 01/04/2014

A place to ask general spud cannon related questions.
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Unread postAuthor: wyz2285 » Thu Apr 11, 2013 5:30 am

Yes he does! Thanks! The shipping fee it's very reasonable too :D
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: mako » Thu Apr 18, 2013 2:24 pm

Does anybody here have any experience with using a drill press as a lathe?
I would really like to have a lathe, but I don't have the cash to get one.
I've seen some threads on machining ABS pistons with drill presses, but can it be taken further?
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Unread postAuthor: jakethebeast » Thu Apr 18, 2013 3:26 pm

I lathe all the time using my drill press and files/angle grinder/other tools. Its isnt as accurate though... :D
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Unread postAuthor: mako » Thu Apr 18, 2013 3:27 pm

How do you go about doing that? I'm not sure what tools would be necessary.
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Unread postAuthor: jakethebeast » Thu Apr 18, 2013 3:38 pm

Put piece to your drill press. start it, then use files/lathe bits/ drills/grinders/saws/sandpaper to shape and fisnihs the surface
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Unread postAuthor: Fnord » Wed Apr 24, 2013 4:55 am

Hey guys,
Have a project going in the background right now and figured I'd ask this here.
I was originally trying to use aluminum to fabricate parts. After doing so I'm not really happy with the durability of some of them, so I'd like to make replacements out of stainless.

The dimensions of the flatstock I need are 1" x 1.75 x at least six inches long.
This size isn't readily available on the small-order metal stores so I want to see if anyone has a chunk laying around before I pay out the butt somewhere else. I will be covering shipping+some extra for the material.

Steel grade doesn't matter, just something that won't burn out tooling easily. 304 would be fine.
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Unread postAuthor: Zeus » Wed Apr 24, 2013 5:02 am

Why stainless, just for corrosion resistance?

Be worth going to a machinist, I get a few odd bits of 4140 that way.
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/sarcasm, /hyperbole
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Unread postAuthor: Crna Legija » Wed Apr 24, 2013 7:48 am

Zeus wrote:Be worth going to a machinist, I get a few odd bits of 4140 that way.


ahaha we have a few 1.6m square blocks in 4140/4130 laying around at work, just waiting to become a die!
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Unread postAuthor: Zeus » Wed Apr 24, 2013 7:50 am

Nice mate, I just dig through the bin and offer a few bucks for a pound of scrap. Easy as
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Unread postAuthor: Fnord » Wed Apr 24, 2013 7:07 pm

Zeus wrote:Why stainless, just for corrosion resistance?

Be worth going to a machinist, I get a few odd bits of 4140 that way.


Yeah, I want something that'll never have to be cleaned. Also because I have other stainless parts and was noticing a little galvanic reaction where it contacted the aluminum.

Would a machine shop want to bother with something this small, where there is basically no machining to be done? I have no experience dealing with them at all so I don't know how much the price markup would be...
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Unread postAuthor: Zeus » Wed Apr 24, 2013 7:10 pm

Just ask if they've got any scraps of stainless that you can buy for twice scrap price.
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Unread postAuthor: jackssmirkingrevenge » Tue Apr 30, 2013 1:08 pm

Some of you might remember this epoxy based LOTR themed box I had made for my then girlfriend many years ago:

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Against my better judgement, we hooked up again recently so I decided to give it another go reflecting all the skills and tools I've gathered in the meantime, herewith the result. First time I machined wood, quite happy with the result. Finished it in linseed oil.
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Unread postAuthor: wyz2285 » Tue Apr 30, 2013 1:12 pm

And how long will you take to make the baffles :lol:
Just joking, no worries :)
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: jackssmirkingrevenge » Tue Apr 30, 2013 1:14 pm

They're next on the list ;)
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Unread postAuthor: wyz2285 » Tue Apr 30, 2013 1:37 pm

Also I heard about your pengun incident, I can pay you in advance if you wish :)
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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