First off, Thank you goes out to Topsie for planning, building and sharing his files! Top Shelf style there.
This was my first attempt at building a CNC machine and I can't think of any reason why I would change anything. Modding the cnc will be fun, but "out of the box" it's pretty solid. This build took me just shy of 2 months to plan, collect and 3D print all of the parts. The build went pretty easy. There were some issues along the way with installing some parts backwards, print qualities and nuts and bolts quantities and sizes a little off, but I believe that this is the fun part of building DIY anything. Like a scavenger hunt.
A lot of 3D printing. If you are looking in to building this project or one similiar, be prepared to let your 3D printer run 24 hours a day / 7 days a week! All my prints were done on the Ender 3 Pro, which I've never printed anything or own a printer until I stumbled upon Topsie's You Tube Channel one Friday night. Wife is loving you for that Topsie... :) I kept the same white colored prints as I felt the white looks clean.
The elctronics were pretty straight forward. I tried using some Nema 17's I had laying around, but in the end I ordered from Stepper Online. Adjusted the amperages and the machine sings along pretty effortlessly. .65 seems to be the sweet spot for these motors. I'll try to experiment under load, but I don't imagine there being much of a difference. I'd love to know what amps others are pushing through their motors...
Anyways... Thanks again Topsie. I have a $2,000 - $3,000 CNC for a fraction of that cost.