Simple 4th Axis Idea

I have seen posts on here about adding a 4th axis and it always seems difficult to impossible. I make a lot of legs for chairs and tables and most of them are round and tapered, so I spend a lot of boring time at the lathe. What if, for this purpose, I attached a 4th Axis that isn’t connected, electronically, to my machine at all. I could run it at a set RPM just like I do my lathe, and zero the cutter on the center of the tail stock. I could make a tool path that simply travels along the X axis and the Z moved down as it goes to create the taper.

Sound like it would work? Anyone have any thoughts? Is this crazy?



Should work fine. There’ve been folks who have made similar setups.

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