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!
User avatar
Technician1002
Captain
Captain
Posts: 5189
Joined: Sat Apr 04, 2009 11:10 am

Sun Oct 16, 2011 9:42 pm

To make mine easy to seat, I added a small mechanical stop on the small cannon so the piston could not be pushed too far forward. Closing the valve properly is as simple as pushing in the knob until it stops.
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Sun Oct 16, 2011 10:29 pm

Labtecpower wrote:You don't have to hurry, tomorrow I have a party and i'll need the whole tuesday to recover from it :D
Hehe when you regain consciousness it should be done :)
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Tue Oct 18, 2011 1:01 pm

here you go ;)
Attachments
ltcpiston2.JPG
ltcpiston1.JPG
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
Labtecpower
Sergeant 3
Sergeant 3
Eritrea
Posts: 1297
Joined: Sat Feb 20, 2010 6:38 am
Location: Pyongyang
Has thanked: 5 times
Been thanked: 13 times

Tue Oct 18, 2011 1:34 pm

A bit too fast with my PM, Looks very nice :)

Also a very nice polymer, I may take this up to 500 psi when I get a fridgy, And I definately want something strong :D
User avatar
jakethebeast
Corporal 5
Corporal 5
Finland
Posts: 945
Joined: Sat Jul 03, 2010 4:20 pm
Location: Jakes cave

Tue Oct 18, 2011 1:41 pm

JSR, received the valve today, its awesome! fantastic craftmanship!
Est Sularus Oth Mithas
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Tue Oct 18, 2011 1:46 pm

Labtecpower wrote:A bit too fast with my PM, Looks very nice :)
Eh, midweek drinking :D
Also a very nice polymer, I may take this up to 500 psi when I get a fridgy, And I definately want something strong :D
Acetal is surprisingly tough stuff, I would definitely trust this at 500 psi. I suggest a 10mm washer to spread the load though.
jakethebeast wrote:JSR, received the valve today, its awesome! fantastic craftsmanship!
Excellent, glad you like it :D looking forward to seeing it being put to good use ;)
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
Labtecpower
Sergeant 3
Sergeant 3
Eritrea
Posts: 1297
Joined: Sat Feb 20, 2010 6:38 am
Location: Pyongyang
Has thanked: 5 times
Been thanked: 13 times

Tue Oct 18, 2011 1:57 pm

While it is at your place, Would it be a lot of work to put a slight bevel on the outer edges of the piston?

Sharp outer edges on plastic objects tend to get very ugly :wink:
Not necessary for the O-ring grooves BTW.


Eh, midweek drinking :D
Jealous? :D
User avatar
jakethebeast
Corporal 5
Corporal 5
Finland
Posts: 945
Joined: Sat Jul 03, 2010 4:20 pm
Location: Jakes cave

Tue Oct 18, 2011 2:00 pm

JSR, this is just one of the parts i need machined, i still need 4 (or 5) parts machined, this is a long-scale projekt, i dont wanna rush with it :wink:

for just to get your attention, its going to be 8mm 3000psi PCP airgun :wink:
Est Sularus Oth Mithas
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Tue Oct 18, 2011 2:07 pm

Labtecpower wrote:While it is at your place, Would it be a lot of work to put a slight bevel on the outer edges of the piston?
Well i don't want to clamp it in the chuck now and mark the surface, but I'll be careful ;)
Jealous? :D
There was a time ;) these days I just prefer machining!
i still need 4 (or 5) parts machined
And I like shineh blades :D
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
Labtecpower
Sergeant 3
Sergeant 3
Eritrea
Posts: 1297
Joined: Sat Feb 20, 2010 6:38 am
Location: Pyongyang
Has thanked: 5 times
Been thanked: 13 times

Tue Oct 18, 2011 2:13 pm

Well i don't want to clamp it in the chuck now and mark the surface, but I'll be careful :wink:
I don't care about some slight marks, I think you have proved to be a good machinist :D
There was a time :wink: these days I just prefer machining!
I still prefer girls over lathes :D
User avatar
jakethebeast
Corporal 5
Corporal 5
Finland
Posts: 945
Joined: Sat Jul 03, 2010 4:20 pm
Location: Jakes cave

Tue Oct 18, 2011 2:16 pm

but if you are really good, you lathe WHILE you are with girls :D
Est Sularus Oth Mithas
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Tue Oct 18, 2011 2:26 pm

Labtecpower wrote:I don't care about some slight marks, I think you have proved to be a good machinist :D
done without marking, thank you masking tape.
I still prefer girls over lathes :D
They will become tiresome, besides the machining and ladies aren't mutually exclusive. Make "erotic massagers" and you'll be beating them off with a stick ;)
Attachments
bevelly02.JPG
bevelly01.JPG
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
Labtecpower
Sergeant 3
Sergeant 3
Eritrea
Posts: 1297
Joined: Sat Feb 20, 2010 6:38 am
Location: Pyongyang
Has thanked: 5 times
Been thanked: 13 times

Tue Oct 18, 2011 2:37 pm

Looking very good, JSR.

The price is almost too low :roll:
They will become tiresome, besides the machining and ladies aren't mutually exclusive. Make "erotic massagers" and you'll be beating them off with a stick :wink:
But the girls that are attracted in that way aren't completely what i'm searching for :D
I have found one that thinks my spudgun collection is "cute" :roll:
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Tue Oct 18, 2011 3:45 pm

Labtecpower wrote:The price is almost too low :roll:


Well if you want to pay more ;P

I'm still a novice at this, prices will go up as I get better so get 'em while they're hot :D
I have found one that thinks my spudgun collection is "cute" :roll:
Image
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
mattyzip77
Sergeant 3
Sergeant 3
United States of America
Posts: 1249
Joined: Tue Jun 28, 2011 12:22 pm
Location: Taxachusetts

Donating Members

Tue Oct 18, 2011 4:48 pm

That did come out extremely nice, almost perfect. I wish you could make a 2 inch version!! :( :(
Go Bruins!!!!
Post Reply