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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velocity3x
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Fri Aug 05, 2011 12:22 am

I'm not interested in making parts, but I do think the following question needs to be asked:

Has anyone given thought to the possible liability that could arise from making a part(s) that might ultimately be involved in a spudding accident?
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jackssmirkingrevenge
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Fri Aug 05, 2011 12:51 am

velocity3x wrote:Has anyone given thought to the possible liability that could arise from making a part(s) that might ultimately be involved in a spudding accident?
Has anyone ever sued a PVC manufacturer when their launcher blew up?

I think a simple disclaimer declaring the part to be a paperweight not to be used for any other function signed by the receiver would probably suffice...
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Fri Aug 05, 2011 6:27 am

Spudfiles has a disclaimer, it's the 1st or 2nd page you see and should read when you registered...
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inonickname
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Fri Aug 05, 2011 6:54 am

Yep...the responsibility is yours. However, I wouldn't sell something that I wouldn't be happy using myself... Anyone who is familiar with my less SF oriented projects would know very well that I'll always overbuild.
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ramses
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Fri Aug 05, 2011 8:51 am

dewey-1 wrote:
ramses wrote:
Also, post TOLERANCES!!!!! If I need to hold +- 1 thou, it will take longer, but if I can have 50, it'll be a breeze. Also keep in mind the tolerances you actually need. You don't need +- .0003 diameter on a ~.2" hole 1.2" deep that will hold a roll pin that I will be pressing in! (but tell that Eaton corporation)
.050 is a ridiculous tolerance for a machined part!
1/16 is .0625, close to a carpenter's tight tolerance.

I hope you meant .005.
That's why I said it's a breeze. One could tram everything by eye, roughly align the cutter, etc.
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velocity3x
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Fri Aug 05, 2011 8:53 am

jackssmirkingrevenge wrote:Has anyone ever sued a PVC manufacturer when their launcher blew up?
I couldn't say, but having grown up in the "Frivolous Litigation Capital of The World" (Southern California), liability is always of great concern to me. So very many lawsuits overtly exhibit a profound lack of common sense and justice, yet they happen on a daily basis. Perhaps I'm overly cautious, but I just thought I'd share the thought. Carry on.........
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jackssmirkingrevenge
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Fri Aug 05, 2011 10:56 am

velocity3x wrote:Perhaps I'm overly cautious, but I just thought I'd share the thought. Carry on.........
You mean California "We-banned-50-BMG-rifles-but-still-allow-the-510-DTC" California?

:roll:

I think it's all about context, what might come across as slightly paranoid to those living where the disease of litigation culture hasn't spread is a completely justified concern considering your place of residence, I don't blame you!
hectmarr wrote:You have to make many weapons, because this field is long and short life
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ramses
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Fri Aug 05, 2011 11:06 am

jackssmirkingrevenge wrote:
velocity3x wrote:Perhaps I'm overly cautious, but I just thought I'd share the thought. Carry on.........
You mean California "We-banned-50-BMG-rifles-but-still-allow-the-510-DTC" California?

:roll:

No, no no. They banned the .50 BMGs because they were assault rifles. I mean, they have synthetic black adjustable stocks, removable magazines, and threaded muzzles/flash suppressors. :D :D

Liability is a concern, but a simple waiver should help. I think the waiver at the beginning of this website might help save someone's arse in court, but you never know.
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pipeboyswe
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Wed Aug 10, 2011 4:23 pm

Hi is there anyone who can and would make this 10mm mold for a good price?
Made in solidworks: http://www.easy-share.com/1917209817/10mm bulletmold.SLDASM
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ramses
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Wed Aug 10, 2011 9:14 pm

I can't open it (but I probably don't have time to make it anyway). Was this made with Solidworks pre-2003 or post 2010?

Could you upload an orthographic drawing in a more open format?

Thanks!
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Technician1002
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Wed Aug 10, 2011 10:13 pm

If you are in the Portland Oregon area next month, one of the home machinists clubs is having a show. It is geared to model steam engines, machining, home built CNC, and metal casting. There will be a demo of casting aluminum if you want to see it done first hand. (i've done some myself) There will be lots of experienced home machinists to meet so you can ask questions from those who do this.

I hope this does not sound too spammy promoting an event I have no association to. See you there if you can make it.
http://www.oregongears.org/

These guys turn out some fantastic stuff.

Image
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pipeboyswe
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Thu Aug 11, 2011 5:30 am

ramses wrote:I can't open it (but I probably don't have time to make it anyway). Was this made with Solidworks pre-2003 or post 2010?

Could you upload an orthographic drawing in a more open format?

Thanks!
It was made in solidworks premium 2010 :D
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al-xg
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Thu Aug 11, 2011 7:21 am

It seems you've posted the assembly file without the actual parts included. I have the parts and mates list but it says it can't find the files...
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pipeboyswe
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Thu Aug 11, 2011 7:49 am

al-xg wrote:It seems you've posted the assembly file without the actual parts included. I have the parts and mates list but it says it can't find the files...
Ohh sorry my bad here they are:
http://www.easy-share.com/1917301219/.40cal handle.SLDPRT
http://www.easy-share.com/1917301220/.40cal handle2.SLDPRT
http://www.easy-share.com/1917301221/.40cal mold p1.SLDPRT
http://www.easy-share.com/1917301222/.40cal mold p2.SLDPRT
http://www.easy-share.com/1917301223/m8bult.SLDPRT
http://www.easy-share.com/1917301224/m8nut.SLDPRT
http://www.easy-share.com/1917301226/10mm bulletmold.SLDASM
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velocity3x
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Thu Aug 11, 2011 10:47 am

pipeboyswe wrote:Hi is there anyone who can and would make this 10mm mold for a good price?
What is your definition of a "Good Price"?
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