In this video, we'll build a frame around the machine, using 3030 extruded aluminum for the frame and 4mm thick polycarbonate for the doors and front panel. We'll use cheaper (but potentially less secure) materials for the sides, which makes it much less likely that someone will stand in the way if the cutter tries to escape!
I also made the rail extensions and installed rubber bands on the X and Y axles, and began installing the spindle clamps on the Z axle.
In the next video, we'll assemble and wire a 3kW Chinese ER20 spindle!
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Building a DIY CNC Milling Machine
My goal for this project was to design and build a CNC milling machine without turning any parts. Typically, milling machines require much larger milling machines to ensure smooth, parallel spindle surfaces.
By using aluminum tool plates (which are theoretically machined smooth) and fastening key parts with bolts instead of welding, we should be able to avoid some of the machining work. Ultimately, we're building a milling machine because we don't have any!
The linear rails and ball screws are cheap Chinese 20mm rails, which you can find on eBay, for example.
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