Z-axis totaly wrong
the Z-axis controlling seem to be totaly wrong, the steps seem to be far to wide. In the above picture you can see the totaly height is more than 20 mm. It should be 15 mm.
Can anyone give some advice?
Thanks, Robert
RE:
This could be for a lot of reasons. What type of filament are you using? Is it dry? Damp filament can do this. Also, if you set too high of a flow rate it can do this as well. Or the nozzle temperature is too low. Did you build this as a kit or is it factory preassembled? Need more information. Anyway, I don't think this is a hardware problem.
RE:
Do your Z-axis spindles move freely or is there a chance that they get stuck in one direction, skipping steps? The print plate moves up and down continuously during a print. If steps are skipped one way only, the result would probably look like the picture. I don't think the load cell sensor is active during print so the firmware would not notice.
Check whether the print bed is level or severely tilted (run to via controls near 0 mm and use the nozzle as reference, moving around carefully (!) by hand. If the gap changes by several mm, something is off.
RE: Z-axis totaly wrong
I am using a Kit. I was using Elegoo Rapid PETG, I#m not shure if it was dry, it was just fresh out the box.
The nozzle temperature was standard 270. I will try with the slightly higher nozzle-temperature next time. I can' say anything to flowrate, standard i guess.
I will check if the bed is level.
Thank you for your support and here is another picture
RE:
I am using a Kit. I was using Elegoo Rapid PETG, I#m not shure if it was dry, it was just fresh out the box.
The nozzle temperature was standard 270. I will try with the slightly higher nozzle-temperature next time. I can' say anything to flowrate, standard i guess.
I will check if the bed is level.
Can you try a different filament, do you get the same issue? If not, then this looks like a classic example of wet filament. Fresh out of the box does not mean dry unfortunately. I've had filament that came out of the vacuum bag that I could hear sizzle and pop (because it was wet) as it was coming out of the extruder. If it has been sitting in a warehouse for a while it can still collect moisture, even in a vacuum bag.
Try popping in the filament dryer for 5-6 hrs. If you don't have one, strongly recommend you buy one. Some people use food dehydrators as a cheaper alternative. You can also set the bed temp to 60 or 65 degrees put the spool on it and cover with a cardboard box (like the filament box it came in).
RE: Z-axis totaly wrong
is this the first print at all? It could also be a problem with the extruder tension screws...