I wound up fighting with my delta printer for three hours after I intended to go to bed.
I am baffled as to what's happening here. I've tried to start the same print several times, including re-slicing it several times, and the print is failing in completely different ways within the first few minutes of printing. The belts are correctly tensioned, and the rails are lubricated.
First it was the weird printing-in-the-air, then the filament failed, then it had some sort of kinematics issue and was printing straight lines as wavy, then it acted like it was losing steps, and then it just got stuck in some sort of loop where it kept homing over and over again and thought the print wasn't running.
When I give it single G0/G1 commands, it has no problem moving around accurately at various speeds, and if i run the bed mesh probing routine it works fine the whole time and produces a mesh that looks almost exactly like the one it's been using for the last couple weeks.
I'm about to pull the printer apart for a more modifications (enclosure, new nozzle, some changes to the effector), so i guess I'm going to test the board and the host thoroughly while i have it apart.



