Thread milling shallow bind hole

**njhussey** · 11-12-2015

I've been looking into threadmills as it sounds like good sport

....anyone got a good source for them?

**mekanik** · 11-12-2015

Hi Steve
You would be as well doing some test pieces first, as stated Stainless is a bugger.
What's the application ?
Regards
Mike

**suesi34e** · 11-12-2015

Hi Mike,
Yes thanks for the thought. I will certainly have practise before picking up the finished parts. The parts are for finishing off nicely m12 stud that protrudes a flat surface. Basically, just a blanking cap.
Many thanks
Steve

**mekanik** · 12-12-2015

Originally Posted by suesi34e

Hi Mike,
The parts are for finishing off nicely m12 stud that protrudes a flat surface. Basically, just a blanking cap.
Many thanks
Steve

Steve i know this is a silly question but is it not possible to measure the stud protrusion , remove the stud and machine the protruding length from the end ?
Mike

**suesi34e** · 13-12-2015

Hi Mike,
Tar very much for the thought and I don't think it is a silly question! I had tried to see it is was possible. Had I have known to cut the stud down prior to the whole assembly being welded up I could have. As for now I don't think I can get on the stud in anyway to cut it down it protrudes up through a large flat plate that is mirror polished so easy to scratch etc. I think I will just look a slightly larger pocket to hug the threads and stick it on like you said.
Tar very much for the help
Steve

**mekanik** · 13-12-2015

hi Steve
Have you thought about using stainless dome nuts that you would fit on a cylinder head, maybe thin them down a bit.

**andy_con** · 14-12-2015

i own 3x tapmatic tappings head, but since switching to thread mills ive not used the tapping heads once.

thread mills are ace, the best thing ever.

granted i use m2 and m3 threadmills in ally, but i always get good results.

what you could try is altering the dia of the threadmill in the coding setup, so do a few passes getting deeper (or wider, till you reach the tools actual dia) and deeper till you have taken the correct amount of material off. the good thing with thread mills is you dont have to take the full depth of cut in one go.

hope this helps

**suesi34e** · 14-12-2015

Hi mekanik
Thank you very much for the thought. I tried a dome nut but I just didn't suit the look of the parts so I moved away from it. I think after a good bit of figuring out I am getting there with the caps.
Many thanks
Steve

Originally Posted by mekanik

hi Steve
Have you thought about using stainless dome nuts that you would fit on a cylinder head, maybe thin them down a bit.

**komatias** · 11-12-2015

Got mine at drill services.

**jamesgates1000** · 11-12-2015

I have used thread Mills from wnt or cutwel, both supply quality tools. Roll tapping stainless isn't a problem if you use a good quality roll tap and plenty of rocol.