Custom M12 Bolts make in PEEK

[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

[blackburn mark]

Ah, so it was a loaded question then?

I would take it to Gandalf the Gray and ask him what the angle of the dangle was :)

[mekanik]

I was thinking of offering to make them, but without a proper gauge it's not an option really, also the PEEK is GBP75 for 22mm Dia Bar so that only GBP75's worth of beer tokens
PS angle of dangle will be 60deg for Metric thread

[blackburn mark]

I was thinking of offering to make them, but without a proper gauge it's not an option really, also the PEEK is GBP75 for 22mm Dia Bar so that only GBP75's worth of beer tokens
PS angle of dangle will be 60deg for Metric thread

IF my memory serves me 22mm wouldn't cover the full standard M12 hex head, it would need to be 25mm rod (next standard rod size up)
as an "M12" surly it can only be ISO1.75 or ISO1.25 for fine... I'm not with you on the "proper gauge", what is a "proper" gauge and in what sense would you need one? (just out of interest :)