Yes,so the experience of making the A3 green-blue weave one was so bad that I decided to buy a more sophisticated drawing robot (the other one was a bit too inaccurate). It finally arrived from China, and here are the parts in-box:
Quite intimidating, especially the sheer number of screws and circuit boards.
After a day of careful assembly, I finally had something that looked like it was meant to:
It moves as it should … now just have to try using the software to drive it! Oh, and it was from Vigotech, as it happens - although there are a number of similar ones out there.