I'm back on track with my hbot printer. Development is in progress and I should be able to run some test with stepper motors very soon. Last time I tested it only with some 608z bearings and it didn't went great. Metal on metal wasn't great idea.. with this type of kinematics there is quite big skew force when only one stepper motor is on. There is two ways to fix this issue, either go for linear bearings and rods or go V wheels. Luckily I got mini lathe and that's why I have decided to try second option first as I really like the idea of direct extrusion gantry. Anyway here is a short movie showing one of the carriages with mounted V wheels. And some pictures Pic1. home made V wheels :) Pic2. I really like those aluminium spacers Pic8. Looks like they fit really nicely
3D printers, Arduino, programming.. and all kind of random things