I recently replaced the lathe motor on my HF-44142 with a dc treadmill motor so I could get the low RPM's for thread cutting, and other functuions where high-torque/Low RPM is useful. In the process of converting the lathe to use the new motor I had a good excuse to use my mini-foundry to cast the drive pulley I needed for the new motor.
I used the original pulley that was in the lathe as my pattern and rammed up a mold.
The first is a picture of the cast pulley beside the original, just as it looked after breaking it out of the sand mold.
The second picture is the cutting bit I made to cut the V into the rough pulley casting. This bit was made from plain mild 1/2" square stock which I ground and checked against the original pulley held up to a light. Once I got the proper shape, I case hardened the cutting end. (although I probably really didnt need to do the case hardening to cut the aluminum - I was really just looking for a reason to play with my kasenite
Lastly - is a picture of the finished pulley alive and well in it's new home - my HF 44142.
-cheers
