Layer shifts on longer prints
I'm guessing this is probably something to do with either supports of stringing, but would be nice to hear other opinions on possible solutions of the issue.
It's running :
Rat Rig V-core 3 500mm
80mm/s print speed.
Accel at 3500mm/s
mosquito magnum and 4028 cooling fan
Sitting on unstable table that needs to be changed...
8 Replies
conventional-tan•2y ago
I wouldn't particularly supprised if its related to heat build up and the gantry bowing slightly buddy. I have experienced this recently the nozzle then catches on the part and you end up with a shift. Was it enclosed or hot in the room?
Took the lid of opened a window ran the same gcode again and its been fine since for several prints of the same item
flat-fuchsia•2y ago
Room is kinda cold (~15C), but being a 500mm machine it has a massive bed heater. I'm thinking of plugging a camera in and recording it, to see how it fails. Not sure what's the best way to do it.
conventional-tan•2y ago
Maybe do a mesh upon the next failure and see if the gantry has moved? Also I have seen layer shifts in my farm due to warping infill which the nozzle will then catch. Having said that your part doesnt look like it has much if any infill
15c actually sounds a bit cold (sub-optimal) for a print room
Did you see any signed of warping on the print?
flat-fuchsia•2y ago
I have disable mesh before every print and only redo mesh upon touching the magnetic bed plate. Saves like 5 minutes if I forget something on the print.
It's kinda cold, that's why I have heaters for sla printers. The print hold fine to the bed and has no warping
conventional-tan•2y ago
IS that lighening infil? Not tested that yet
flat-fuchsia•2y ago
Yes
I might try and reprint with gyroid
conventional-tan•2y ago
Gyroid is good for warp reduction
Assuming that was the cause of the failure?
flat-fuchsia•2y ago
Without video evidence of it happening I can see what else could go wrong. I will go over EVA belt holders, maybe they started to let go under heat from the bed. Maybe the stepper motor pulleys are loose...