Moving the head off center

Roberto

Hello everyone, I have a problem with the printing. You will see on the pictures that the movement of the extrusion head is not correct. The movement is more important to the left of the plate. Mainly in X and a little bit in Y. Do you have any idea what the problem is?
Motor voltage or something else?
Thanks for the advice and info.

o_lampe

@roberto That's weird. I've marked the areas which look OK, but the circles in the center are different to the outer perimeters. The infill is all the same, no difference on the whole area...
It's probably a matter of under extrusion because filament-temperature drops?

Roberto

@o_lampe the nozzle is 2.0mm. I don't understand this discrepancy.
the nozzle is 2.0mm. I don't understand this discrepancy.
I don't think it's an under extrusion. I am at 105% flo

alankilian

@roberto said in Moving the head off center:

the nozzle is 2.0mm

Wow! That's a large nozzle.

Mine is 0.4mm.

What temperature and speed are you printing?
Does it do the same if you print at 25% of this speed?
Does it do the same if you print at 130% of normal?

T3P3Tony

@roberto it looks like this might be related to the direction that the print head is moving. You can do some tests with simple cubes with 2 perimeters (don't need the infil). Silce a single layer with the cube sides parallel to the XY axis and another with it at 45 degrees to the axis. Observe at its printing which way the extruder is moving at it prints the perimeters and if the direction that the print head was going makes a difference to the gaps.

Roberto

@alankilian Hello, the T° is 210° and the speed 40mm/s. Layer 0.3
I tried at 30mm/s and there is no difference.
Faster, I have not done.

Roberto

@t3p3tony Hi Tony, I'll do the tests and get back to you.

o_lampe

@roberto With a 2mm nozzle, do you use 3mm filament?
Do you have a hotend with a surround heater-cartridge, like the new E3D rapid change revo?
I could imagine, with a classic heaterblock (even a Volcano) the filament will not melt evenly.