Can you not buy/make some M6 x 0.75 studding?

I think retapping will come close to leaving you with a 6mm hole, helicoiling could sort the problem if you want to go to M6x1 but that is not too cheap unless someone can do it for mates rates. If studding with the right pitch is available then the problem is solved.

Mike

Studding in metric fine may be hard to obtain, if there is sufficient wall thickness, then helicoils are much easier.

Check out ebay listing 173833058997.

 Michael Gilligan's post shows a source, but it is very expensive for only 25mm lengths.

Edited By old mart on 01/07/2019 18:08:59

To make studding quickly and easily take a look at this:

YouTube video

Edited By Hollowpoint on 01/07/2019 18:43:07

I think I'd rather use grub screws than cap-heads to hold the die though.

Bill

Once the die holder leaves the guide it does have a bit of wobble but if that is not a problem then it is certainly quick. I think I would go with Duncan’s plan that does not involve any living clamps.

Mike

Unlike the tang of the file he uses to put a chamfer on the end of the rod! V. dangerous.

On 2nd thoughts after closer examination there is a handle on the file. I withdraw my complaint

John

Edited By Journeyman on 02/07/2019 10:56:47

Going back to the original post asking about an easy fix, the answer is dependent on what Garry considers easy, but more importantly, what is the actual purpose of these holes and studding.

If its not essential to have long lengths of stud projecting out of the holes than why not just use screws or bolts with the finer thread, not as much available as in metric coarse but still enough around to chose from.

From the picture the lathe looks to be a woodworking lathe so its unlikely to be ideal to make studding. Is the 6mm diameter a limit, I wonder whether the holes be rethreaded to M8 (or M7) and larger studs used, alternatively it would also be possible to make inserts with M6 internal thread and a larger external thread, say M8.

Ian P