"Making a Stem" for a Patek Philippe 16-250 with my New Lathe

This is my first attempt to work on the Patek Philippe stem that I plan to modify / make with my new watchmaker's lathe.

If you're interested in the variable speed brushless DC servo motor that I have attached to it that was a purchase on AliExpress and cost an additional $98 not including shipping. Here's an affiliate link for that:

https://s.click.aliexpress.com/e/_DkLT5xP

I bought the 800W Kit, which includes the motor bracket.

I also bought the two v-belt pulleys you can see mounted on the motor's 14mm shaft separately:

smaller pulley (mounted closer to the motor in the video):

https://s.click.aliexpress.com/e/_DD2MTxP (select W4 O30 suit 4mm belt and specify bore size of 14mm to seller in message)

larger pulley (mounted on the end of the drive shaft in the video):

https://s.click.aliexpress.com/e/_De0TtwN (select Bore Diameter: 14mm, Width: 40mm)

You only need one pulley, and I recommend the smaller one even though it costs a bit more as it fits the 4mm belts better. I ordered two because I was not sure that the larger, less expensive one would work. It works fine but the belt can slip from side to side.

#watchmaker #restoration #watchrepair #watchrestoration #tools #comedy