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I've built a vertical machining centre or what some may call a CNC knee mill. It is mostly built out of 3D printed parts and aluminium profiles. I had to do an insane amount of cuts drills and taps on this build but I think the end result is very much worth it.
Apart from the XYZ movement it has a lifting XY table that allows for very tall parts to fit in the work area and a tilting head to do weird chamfering and slotting jobs. The motors are Nema23 attached to some ball screws and MGN12 linear guides and blocks.
I'm already aware that I should have protected the guides and the ball screws from the chips while milling. I'll try to add some covers in the future.
It is way faster cutting through steel than my previous all metal CNC too so I'm pretty sure it'll come in handy for future projects. As always let me know your thoughts in the comments.

More info about the files for this mill can be found here:
https://ivanmiranda.com/products/3d-p...

More info on the board I used in the build can be found here:

https://www.duet3d.com/Duet3Mainboard6HC

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CHAPTERS:
00:00​ Lifting table
02:41 XY Axis
04:21 NordVPN
05:29 XY Platform
07:42 Frame
09:00 Z Axis
09:47 Final assembly
11:39 The boring wiring
13:05 Moving and homing
14:12 Testing