Waves on printed parts
Dear all I was changed to an Octopus, and last Marlin version, coming from an old small board, and just one step previous Marlin version, using 2 mm advance lead on Z axis, as before, and now this effect appeared, any idea?
19 Replies
print the cube with 200% size
if the waves have the same height its most likely z-wobble, if the waves are smaller its probably the extruder
afraid-scarlet•2y ago
I'll try , the extruder it's an Orbiter 1.5 and is giving me some headache
why? its a good extruder
afraid-scarlet•2y ago
I think it's a good extruder too, I was too fast in my last answer, I did the cube, and some more taller, with same results, waving, I was even tried to change extruder flow, as in the picture, from 50 to 100%, results are always the same, referring wobbling, I'm using linear guides, in X and Z, I was tried using rigid couplings, flexible couplings, with and without ball, brass nuts, pom nuts, y changed motors for more powerful ones, I changed leads, I changed drivers on board, and of course, thousands of firmware changes, I have ball bearings in the leads tips just to avoid mechanical wobbling, I designed more robust motor holders, the plan for today is to change the drivers model for a 2209, currently I have 2208, just reading, looks like related with last Marlin version, if I have no success changing drivers, I'll change back to 8 mm lead instead of two
what printer is this?
afraid-scarlet•2y ago
A new one designed by me
It's not the first I make
afraid-scarlet•2y ago
ok, then its difficult to help you, i know the typical v-core issues but dont know your system at all
afraid-scarlet•2y ago
It's a common bridge design, but stronger
do you use bearings for the leadscrew constraint on the top?
afraid-scarlet•2y ago
Of course, 608
remove them and print again
just to rule something out
afraid-scarlet•2y ago
Good point, I'll try
afraid-scarlet•2y ago
Dismounted
afraid-scarlet•2y ago
Same behaviour, no changes without them
This looks like the classic watermark bed issue.
Switch to PID
afraid-scarlet•2y ago
I have PID, now, looks much better, mechanical misalignment
I suppose you mean PID on heating?
I will try to find any other pid
i think he is talking about the heating control of your bed, do you use
watermark or pid, and if you use pid have you done apid tuning already?
assuming oyu use klipper it should look like this
[heater_bed]
control: pid
.
this would be the possible issue
[heater_bed]
control: watermarkafraid-scarlet•2y ago
Yes , I always use PID in both, bed and nozzle, and once finished the machine I always include the PID values inside Marlin, compile again, and upload this last version, with PID values included to the printer