rather than continue on with the edits...
I did some searching for motors. My guess was I'd have to ship things in from China and that would take a while. I decided on some ~ 400 oz-in NEMA-23's. Turns out I found a set of 3 with drivers and a US ship location.
[www.ebay.com]
Usual disclaimer – I know nothing about the seller. The risk seemed reasonable to me. It may not be to others.
I figure I’ll run them on 48V. Not sure which supply to use quite yet. The Mean Well SE-600-48 looks about right.
I’m still spinning around a bit on the dimensions of the printer. I think it’s going to come out a bit bigger in X and Y than I thought originally. I made a simple math goof when I did the X and Y calculations in my head. I’m up to something closer to 30” for the spacing on the lead screws with 48” long screws. I’ve got 4” solid wall (not foam) PVC penciled in for the outer supports. I’m bouncing around on the aluminum for the arms. Something like 1.5” x 2” 1/8” wall 6061-T6 would be about 2 pounds for each arm. 2” x 3” would get it to 1.5X that in 1/8”. It would double with ¼” wall. The ¼” stuff starts to get a bit expensive.
I did some searching for motors. My guess was I'd have to ship things in from China and that would take a while. I decided on some ~ 400 oz-in NEMA-23's. Turns out I found a set of 3 with drivers and a US ship location.
[www.ebay.com]
Usual disclaimer – I know nothing about the seller. The risk seemed reasonable to me. It may not be to others.
I figure I’ll run them on 48V. Not sure which supply to use quite yet. The Mean Well SE-600-48 looks about right.
I’m still spinning around a bit on the dimensions of the printer. I think it’s going to come out a bit bigger in X and Y than I thought originally. I made a simple math goof when I did the X and Y calculations in my head. I’m up to something closer to 30” for the spacing on the lead screws with 48” long screws. I’ve got 4” solid wall (not foam) PVC penciled in for the outer supports. I’m bouncing around on the aluminum for the arms. Something like 1.5” x 2” 1/8” wall 6061-T6 would be about 2 pounds for each arm. 2” x 3” would get it to 1.5X that in 1/8”. It would double with ¼” wall. The ¼” stuff starts to get a bit expensive.