If you have an old thermocouple that has an undamaged
nut on it, you can cut the coaxial copper lead and
slip the nut off. Take the nut and cut or file a few
grooves across the threads which will produce some
cutting edges. If you have ever looked at a self
tapping machine screw, you will understand what I mean.
The trick works on standard machine screws also to let
them cut threads into thin material.
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