DIY CNC machine for steel?

[JohnHaine]

Don't touch that Proxxon if you want to mill steel. That Bridgeport would easily mill steel and cast iron, with quite heavy cuts, that's why they were probably the most common mills ever made. I have a Myford VMB which is a lot smaller than the BP put I can take say a 1 or 2 mm cut with a 12mm cutter in mild steel with ease. There are lots of smallish mills that will do similar, look for example at the SX3 from Sieg. This is available in slightly different forms from several suppliers such as Arceurotrade and Axminster. There are also similar machines from the likes of Warco and Chester. These can be converted to CNC, and especially the SX3. It is best to use ballscrews to replace the normal ones to get rid of backlash. I



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