Originally shared by Nicholas Seward
@Brandon_Heller got me thinking about making a backpack printer. The foldable printers are neat but I thought it would be better if the printer just WAS thin. I got a little carried away with the mock up. It is nearly complete. The shortest collapsed dimension is 72mm. The other dimensions are similar to a fullsized laptop and will most definitely fit in my backpack.
The Z is the main attraction. There are 4 scissor lifts that are coordinated by a loop of string and are actuated by a NEMA14 with TR5*2 lead screw. I did the math and even in the worst position there is still 5lbf on tap for pushing the XY stage up. Assuming I can get the hot end to zero out when the printer is fully collapsed there shouldn’t be a problem with the firmware.
The XY is a CoreXY arrangement.
The bowden tube and the string for the XY aren’t pictured.
I would like some ideas on…
How to make the exterior smoother and slimmer?
How to deal with the bowden tube during transport? (I have thought about allowing the hot end to fold down or allowing the tube to be removed.)
How to level the bed/top?
How to zero the Z?
