Custom M12 Bolts make in PEEK

[Spedley]

I believe you get the last bit out by cooling, after all a vacuum is actually about pressure caused by heated particles.
Yes, it would seem that Peek has no gaseous content so is unaffected by long term vacuum. Strange how there are solutions to problems I never knew existed! :-)

[Tenson]

My friend said he is willing to pay £150 including material for the 12 bolts. A sample can be provided to copy. Is anyone interested?

[IanParkin]

I can certainly make them for you quickly
only on a manual lathe mind
what pitch would you friend need?
and what head? round or hex?

I would be happy to make on reciept of material before being paid

Ian

[Tenson]

Thank you for the offer Ian. BlackburnMark offered to give it a go just before you so I'll get in contact with you again if he changes his mind or something. Speed is not important since my friend has still not sent the sample!

[mekanik]

Hi Guys
Just out of interest, how will you be gauging the thread ?

[blackburn mark]

Hi Guys
Just out of interest, how will you be gauging the thread ?

With a thread gauge (like a pocket knife with thread patterns cut in the blades)
you could use a camera if your cnc has one... If it is M12 it can only be one of a slack handful pitches

[mekanik]

Hi Mark
That only lets you know you have the pitch right, what about the effective diameter.
in another life i used top be a mechanical inspector in a machine shop and we had the luxury of screw ring gauges, i have thread parallels @ home but find them very fiddly in use.
Regards