Custom M12 Bolts make in PEEK

[Spedley]

I read that and I'm not sure what an 'ultra-high' vacuum is? :-) Surely you can't get any more vacuous than a vacuum unless it has some extra 'nothing' in it!

[blackburn mark]

I read that and I'm not sure what an 'ultra-high' vacuum is? :-) Surely you can't get any more vacuous than a vacuum unless it has some extra 'nothing' in it!

Most plastic "gas" and getting a full vacuum or close to full is (apparently) a tough nut to crack.

I guess with a syringe it is possible to put a bit of hydraulic oil in it then evacuate all the bubbles put your finger over the end and pull a full vacuum.... I reckon with a larger vacuum chamber it gets a bit like the frog trying to cross the road by only jumping half of the distance remaining.... it never quite makes it across to the other side :)
as the pressure drops there is less and less to remove.... at what point is there one gas atom left and how does the pump get the lousy fooooker out lol

[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 ?