Spring Loaded Gantry/Slider

thingiverse

This is part of an xycore plotter project. The original drawbot from 2020 can be found at https://www.thingiverse.com/thing:2374238. I expanded this design to fit an 8x4 space but the rails kept sticking, so I created a roller version inspired by https://www.thingiverse.com/thing:1329733. Using openscad, I merged the two designs into a spring-loaded carriage gantry that fits snugly onto standard 20mm x 20mm extrusion. Update: Unfortunately, this concept didn't work well in practice due to sizing issues. It's still just a proof of concept at this time.