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I have needed a milling machine for some time, as the tiny milling attachment that I have for my Taig lathe, just does not have the working envelope for some of the things that I need to mill. Hare and Forbes recently had a sale, so I took the opportunity to purchase a Sieg X2 mill. I have also been planning on building a CNC router, so I figured that converting this mill to CNC would be good practice for that.
Searching the net, it seems that the X2 is a popular machine for CNC conversion, so there is plently of info to turn to for guidance.
So far I have purchased two 270oz/in NEMA23 steppers for the X and Y axis, as from what I have read, they are more than sufficient for driving those two axis when ballscrews are used.
http://www.ebay.com.au/itm/NEMA23-270-o ... 43ab219331
For the Z axis, I have purchased a 425oz/in NEMA23 stepper:
http://www.ebay.com.au/itm/321013523721 ... 1497.l2649
The reason for the larger motor on the Z axis, is that it requires more torque than the X and Y axis, to lift the heavy spindle.
For the drivers I have purchased three of these:
http://www.act-motor.com/productinfo/de ... 77_87.html
More to come...