Step 2: Motion.

This post is actually a long time coming, as I did some of this assembly a year ago. I have added gears, steppers, end switches, and RAMPS board.

LM8UU linear bearings are from vxb.com.

I had the top bearings on-hand. They are standard skateboard bearings. Order of assembly is shown below. I needed a few spacers to keep the bearing spinning properly and lined up with the lower gear.

Stepper motors and pulleys were added. Pulleys are GT2, 2mm pitch, 40 teeth, from sdp-si.com. Steppers are NEMA 14 from Adafruit.

Another issue I found was with the end stop switch mountings. The lower mountings slide right onto the aluminum rods, but there is no way to keep them from spinning. This could be fixed with some sort of clamp, but should be okay for now as long as I keep them pointing inward.

The print bed is a scrap piece of corkboard and the glass from an old printer. Holes were punched in the cork to offset the bolt heads.

The 3 axes were labeled, as were the 6 end switch wiring harnesses and 3 stepper motor wiring harnesses.