Z Axis inconsistency - Geeetech I3
I'm 3D printing almost 2 years, and I expected to have better result after changing to complete smooth rods with new bearings.
I have a problem with my Z axis giving me inconsistent prints; I already replaced the leadscrews, E3D clone with Bowden tube, I decided to replace all smooth rods on all axis and also the bearings. After I replaced all this, my prints are still bad, also I'm very dissapointed with the results after the replacements. I have checked all I could think of; PID tuning, belts, ....) but I'm running out of ideas.
- print speed is 40mm/s,
- retraction is 3mm at 30mm/s,
- extruder 205°C for the first layer, then 200°C
There is nothing wrong with your Z axis, your X / Y have probably some play or backlash somewhere in the system.
Yesterday I tried some improvements, first I replaced the Y belt pulley, and aligned the frame which I thought to be non-perpendicular and removed the spool holder (which was the culprit of my problem) Attached photo shows a print after these improvements. I have insulation on my hotend.
I think this is the quality I could expect from this cheap printer. Maybe I could reprint X axis gantry, but I'm a little tired of doing something on my printer.
Update on my prints
I see some elephant foot, but i will fix this by lift nozzle a bit, but is there some more improvements (temp, retraction, z-hop, coasting, ....) ?
Did you have a spool holder on top of your frame? Than it was vibration (as I mentioned in my answer) induced by spool/carriage interaction that caused the problem. Print looks fine now! Glad to hear it is fixed! I have updated my answer to make it more complete.
Spool is not on the frame, it's on the wall, but i think i have to make some improvements for spool holder