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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jrrdw
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Sat Jul 05, 2014 5:20 am

fenrir wrote:I was trying to remove the trigger pin from a crosman mark 2, but I broke the sear. Anyone have an idea where to get another one? Would it be cheaper for someone to machine it for me?
Edit: I'm going to tediously apply jb weld.
Crosman sells replacement parts. As for machining one from scratch it depends on exactly how detailed it is and the meterial it's to be made from. You got pics? Part number?
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jackssmirkingrevenge
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Sat Jul 05, 2014 7:06 am

Finding an existing part is usually cheaper, although it is quite and old model. Parts list here.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Sat Jul 05, 2014 11:13 pm

I don't think job weld is going to hold. It is pretty detailed and you guys are right, it will be cheaper to just purchase it. I found a website called jgairguns that has the part I wanted. :D A bit more expensive than I thought though.
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jackssmirkingrevenge
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Sun Jul 06, 2014 5:28 am

How is it broken? JB Weld on its own won't help, but you could maybe drill a hole through both halves and insert a pin.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Sun Jul 06, 2014 1:30 pm

It would be too tedious, and I already ordered a replacement.
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wyz2285
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Mon Sep 08, 2014 5:58 am

Breech for Jake's hybrid :)
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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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CS
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Sun Jan 25, 2015 1:57 pm

Holy hell your getting really good at machining. Threading then chamfering the slot, spiffy stuff.

Thought id post some WIP 3d printer pron.
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wyz2285
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Mon Jan 26, 2015 9:09 am

I have been printing gears as well, but machined a set of gears too. Trying to make my HPA pump electric.
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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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Labtecpower
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Mon Jan 26, 2015 2:05 pm

Shit, nice work Wen :D

I've visited a research instrument maker's school today, that's going to be my education for the next two years.
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CS
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Wed Jan 28, 2015 4:29 am

wyz, 1:1 ratio, hmmm. Can't help but notice those teeth are roughed out a bit. Besides all the setup and time to get an accurate gear I can't imagine having to grind an HSS blank into the correct cutter profile.
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wyz2285
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Wed Jan 28, 2015 8:01 am

These are just some of the gears :D need to weld a smaller one to each of them.
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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wyz2285
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Fri Jan 30, 2015 12:31 pm

Was building a M4 GBBR, wasn't very satisfied when the WE bolt carrier arrived. So I googled some images of custom AR bolt carriers and started drilling/milling mine to make it slightly more acceptable. (my camera doesn't really demonstrate how good it looks in person)
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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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tigerblues28
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Wed Apr 01, 2015 10:09 pm

Hey guys, Its been a while!

I've grown up a little and gotten off my lazy bum and now have a job, with a small amount of money saved up. Ive made the decision to buy a lathe and am looking into the sherline! It should be perfect for starting out and small, airgun related builds.


Hit me with tips and tricks! Things to keep in mind and remember to do. Maybe things you wish you woulda known when you first started machining.


Maybe we could start a new sticky like "Beginner Spud-Machinist's Handbook"...? If not, hey. Just a thought.

Nick
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jrrdw
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Thu Apr 02, 2015 5:52 am

Maybe things you wish you woulda known when you first started machining.
Well, back in 1980 when I first used a metal lathe (South Bend model A10 IIRC) I wish there would have been home PC's and websites like Spudfiles with a 69 page long machinist thread to study from just 'chucked' full of tips and tricks and links to learn from. :bigsmurf:
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Thu Apr 02, 2015 11:05 pm

tigerblues28 wrote:Hit me with tips and tricks! Things to keep in mind and remember to do. Maybe things you wish you woulda known when you first started machining.
Save more money or shop used, but get something bigger. 1" through the spindle is IMHO a minimum.

Used will likely come with tooling which would other wise have to be purchased separately...which adds up...trust me.
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