Talk:Wallace

I am currently building this model and will release some build instructions and directions on how to correctly cut the rods to get the dimensions you would like.

Jan 31- Second build night. Parts printed- 1 base, 1 Y idler, 1 set of 4 feet, 1 set of 4 bearing idlers, 1 x carriage, 1 x motor end and 1 x idler end.

Notes.

Base- Bug: The base wasn't tall enough for my NEMA 17 motors and was a bit loose in the mounts. Fix: Measured the NEMA 17 motors and adjusted the openscad file to fit. 50mm base height, 43.5 motor casing.

Y Idler- Bug: I only have 608 bearings on hand as do most Prusa builders. The idler was designed for 623 bearings. Fix: Measured the GT2 pulleys I will be using at 26.2mm and the 608 bearings at 22mm OD. An idler that fits would need to have a hole spacing of 48.20mm with 8mm holes. I'm not sure if this will get in the way of the current threaded rod spacing joining the two bases together.

Feet- Bug: None really. I printed them at M6 settings and they won't fit my design. Fix: Print at M8 and use threaded rods twice as long as the Y rods. This will basically out line the foot print of the machine, ensuring nothing is bumped by the bed.

Bearing Idlers- Bug: They won't fit the 608 bearings I plan on using. Fix: I will see if I can adjust the scad file to scale them up. Or design my own.

X-Carriage Bug: The bearing fittings went in fine but were a task to remove. Also, the belt clamp system is a bit confusing. Fix: Adjust the file to loosen the bearing space by 0.25mm. Write up a belt mount instruction with photos.

X-Idler Bug: Again the bearings were incredibly tight. I couldn't even get one in. Next, the hex nut was loose. Fix: Loosen the bearing space, tighten the hex space.

That’s all for now.