You better have a full machine shop at your disposal if you choose to convert a knee mill! The table is very heavy, and must be removed to replace the acme cross nut!
Thee lubrication pump must be converted to an automatic oiler, as the surface area on the ways is large for the fast rapids of servos! So they must be kept well oiled!
The old Hurco CNC knee mills never had handles to turn either!
I would never use a CNC mill as a manual one, the neutral motors are too much to turn by hand
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It's not what you take away, it's what you are left with that counts!