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29-04-2019 #2
Others will be able to say, but should be able to take light cuts in Ali. Steel is probably out of the question - for that you're better off converting an existing mill.
Can't see it in the renders? The carriage plates look reasonable - but obviously there isn't a Z axis yet which will change things.
This size of machine should be fine with Nema 23, but that's just a mounting size. On your long axis, you can either go with a pair, or you can use a single motor with a timing belt connecting the screws. If a belt across the CNC isn't a massive inconvenience to you, my vote is for the belt - otherwise dual drive. There is a motor calculations spreadsheet on the forum which will help direct you to which motors to use.
You can tap the ends of the profiles and stick large bolts in, you can use angles, or you can use T-nuts. There are probably other ways - look at a Profile supplier's website for inspiration (e.g. KJN).
Looks like you're on the right lines to me - I'd carry on by improving the detail of the CAD.Last edited by AndyUK; 29-04-2019 at 04:23 PM.
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