Which thread will make the cut?

I was asked to put a thread in the middle of a handwheel, but it became a marathon effort as the identity of the thread was not clear and then I found that the existing hole was too big for the newly discovered thread. Plenty of machining in this one!

[@ashbro2585]

Brilliant Michael, another job you’ve done for me & yes! it’s going to be perfect. I have no doubt at all. And lovely video production too.

[@occasionalmachinist]

Strangely enough, once the thread was identified, the nut was relatively straight forward. Sometimes, it's all in the preparation.

[@graedonmunro1793]

a good job! i was glad to see you and i still use HSS ground tips for threading, i thought i was the only fool!(LOL) cheers ( Michael?)

[@occasionalmachinist]

For the amount of thread cutting I do, HSS is fine. With the jig on my surface grinder I can get a really good grind too, so no problems with wonky profiles.
(yes)

[@idontwantachannel3091]

Nice work, as usual. I was concerned when you started talking about the cast hub as your reference for where the bored hole needed to be. I would not trust any casting, instead using the rim (where one's hands grip the wheel, ie, the functional element) as the reference to centralise and square to. I expect it all worked out fine anyway.

[@occasionalmachinist]

I'd agree about a cast feature not necessarily being reliable. The hole for the nut is square to the rim and evenly spaced in the hub. As it is a slow speed operation, I'm not overly concerned about the rim being exactly central to the axis of the nut - I think it will be good enough.
Interestingly (and bearing out your concerns) when I put the machined nut with flange into the hole I'd bored, I discovered it was not sitting evenly. That is, the surface of the flange was not parallel to the plane of the rim.

[@DK-vx1zc]

great job!

[@occasionalmachinist]

Thanks.