ExtruDraw Extrusion-based Plotter

A plotter/drawing machine that uses 20x40mm and 20x20mm aluminium extrusion for both structure and linear guides.

**NOTE: if you want to build a plotter similar to this I now have a better design here** https://www.thingiverse.com/thing:6530368

This new plotter has a different design that both improves accuracy, uses similar hardware and doesn't extend beyond it's footprint when working in the way that this plotter does.

I've tested the design up to A1 but it's probably best A3 or A2 size - after testing in A1 size I've now cut it down to a bit bigger than A3 size (old Ikea kitchen cupboard shelf). Also: you can learn from my experience & DON'T USE A PLYWOOD BACKPLATE, it's too uneven and has caused me problems - go with MDF instead.

I use EiBotBoard drive electronics because I have an EggBot, you may use this or any other system to drive 2x NEMA 17 stepper motors and one 9g servo. There is an EiBotBoard alternative linked below if you want to use that system, there are ot