This is a brilliant creation! What an absolutely wonderful device! I was particularly impressed at the imaginative and challenging use of extraordinarily long unsupported bridges, which are a great demonstration of what this printing technology can do! Hours of fun running the machine One comment - I found the speed of the return spiral to be perhaps too high - sometimes the balls can't move fast enough and jam at the point of entry into the spiral. I made. myself a pair of gears that result in the spiral speed being reduced to around 1/3 of the original, which appears to work better

Simple, neat, good cooling, nice appearance, works well