That part is manual - the two knobs on the front clamp the aluminum vacuum tube, so I just loosen those and slide it to the desired height. Automating the shoe height is interesting and might be on my long-term roadmap, but I didn't go for it in this iteration for 2 reasons: 1) a linear profile rail and pneumatic cylinder were more compact and simpler to integrate than a motorized linear positioning mechanism 2) establishing the Z offset for the shoe, both on-machine (manual touch-off? some sort of probing?) as well as the means of programming it in CAM, would add a fair bit of complexity that I didn't want to tackle right out of the gate. The risk of a crash with a dust shoe in the equation is much higher, as are the consequences (something would almost certainly break), so I'm taking it a step at a time.
Spectacular job !
excelente trabajo
😍
howsome! i need to do the same
How do you determine/control how far down the vac shoe is lowered?
That part is manual - the two knobs on the front clamp the aluminum vacuum tube, so I just loosen those and slide it to the desired height.
Automating the shoe height is interesting and might be on my long-term roadmap, but I didn't go for it in this iteration for 2 reasons:
1) a linear profile rail and pneumatic cylinder were more compact and simpler to integrate than a motorized linear positioning mechanism
2) establishing the Z offset for the shoe, both on-machine (manual touch-off? some sort of probing?) as well as the means of programming it in CAM, would add a fair bit of complexity that I didn't want to tackle right out of the gate. The risk of a crash with a dust shoe in the equation is much higher, as are the consequences (something would almost certainly break), so I'm taking it a step at a time.
Awesome! What material are the bellows printed in?
TPU (Sainsmart). They're a little stiffer than I would prefer so I'm going to try printing a set in TPE (83A durometer vs 95A)
@@funkenjaeger Good stuff, can't wait to see follow-up videos! Thank you!
Very clever