I have started to print the test structures from Make:
That shows different problems of my printer.
The gantry is not perpendicular to the X-Axis which I see in the print and also looking from above. The Z-Pillar seems do be quite ok. So it is probably the guides of the gantry on the Z-Pillar.
Is there a recommended way to correct this?
The Z-Axis wobbling test shows a sine wave of the tower in Z direction especially on lower layers.
What does this mean?
@Gareth Owen i know this sounds obvious but that looks like the filament is too hot and not issues with over extrusion. Have you checked the thermistor is shoved all the way in the little hole as far as possible.
This was exactly problem i was having with my prints. As soon as i checked this and corrected the location my prints were 100 times better. also my temperature fluctuations have decreased massively now.
Here's my Benchy...
I made the lead-screw cap (with bearing) mod which made things much worse. The bed leveling was all over the place. In the 2cm span of that test structure I had one side high and barely sticking while the other side was digging into the surface mat. Then, after I found a happy medium on the z-offset, it printed the the wave much like the OP, times 10. My macbook went into deep sleep in the middle of the print so it didn't get to finish (usb turned off so pronterface couldnt talk). But, here's what it looks like:
My thinking is that my mod pulled the lead-screw off center and kept it there ... kinda like the tilt of the earth. But which appears as periodic wobbly tower instead of yearly seasons.
@Holger that's a pretty good looking print!
I tried the Z bearing mod but it didn't work for me.
I fitted a 'proper' aluminium Z coupling and that's noticeably helped.