- Joined
- Feb 9, 2017
- Messages
- 5,263
What a mouthful for a twirly handle, lol! I don’t know for sure what it’s called but it sure make life easier when doing large traverses.
Years ago my brother gave me an old Palmgren 8” XY rotary table. It was nowhere near as nice as my 10” for the mill but it found a home on my Delta UniDrill.
But somehow in its life the speed handles on the XY handles got broken off. I swapped the Y with the rotary and wow, so much better. So a speed handle was added to the todo list. I finally decided it was time and get out my radius gauges and checked the original remaining speed handle. I then transferred that measurement to my ball cutter on the concave cutting side. Once the concave was cut, then reset the cutter to do convex and finished. The overall OD was .375 on the land closest to the wheel and the middle of the convex part so I could turn it around in the ER40 chuck and turn the base to .190 to have .001 press fit into the handle.
i messed up not resetting to leave a flat spot in the middle of the convex and ended up smoothing it out. Oddly it fits my thumb better so while not symmetrical or identical to the original it works. This was definitely a head scratcher to get the sequence of ops but I had always wondered when I looked at those handles like on my shaper or old American machines how they made them.
Years ago my brother gave me an old Palmgren 8” XY rotary table. It was nowhere near as nice as my 10” for the mill but it found a home on my Delta UniDrill.
But somehow in its life the speed handles on the XY handles got broken off. I swapped the Y with the rotary and wow, so much better. So a speed handle was added to the todo list. I finally decided it was time and get out my radius gauges and checked the original remaining speed handle. I then transferred that measurement to my ball cutter on the concave cutting side. Once the concave was cut, then reset the cutter to do convex and finished. The overall OD was .375 on the land closest to the wheel and the middle of the convex part so I could turn it around in the ER40 chuck and turn the base to .190 to have .001 press fit into the handle.
i messed up not resetting to leave a flat spot in the middle of the convex and ended up smoothing it out. Oddly it fits my thumb better so while not symmetrical or identical to the original it works. This was definitely a head scratcher to get the sequence of ops but I had always wondered when I looked at those handles like on my shaper or old American machines how they made them.
