OK thanks! I’ll do that. I am using colorfabb PLA/PHA, Josef prusa’s PLA and MakerPoint PLA (All have the same problem.
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You do have some surface imperfections that may elude to a mild extrusion issue but the odd lines on the prints are from Z-banding/Z-wobble… Since the long rectangle has the most surface area hold it against your Z screws… You will notice that the lines are exactly the same space as your threads on your Z rods. There are a lot of documents and posts out there covering these issues with some possible fixes… Not all things are fixable the same way and part of it could be resolution vs setup related meaning your layer resolution is even recognized by the printer and falls into your machines particular microstepping capability. I apologize for not having more answers but Search google for those terms and it will show you a ton of results for possible fixes
I have checked before the job started if the belts and screws where tight. (which they where).
I now ordered the E3D silicone Sock and try to take a look if it is from the temperature deviation (my deviation is about 5ºC from the set temp).
BTW. The printer does also make a lot of noise. Here is a sample: https://goo.gl/photos/Za7WF63Ricu4Je8f9 19
The next thing I would try in that situation is I would move the Z axis up and down repeatedly (using the control panel) and watch carefully for any kind of wobble anywhere. The movement should be very smooth. I would ensure all belts are tight (plucking them should sound a note in the bass range) and I would verify the heater block is not wobbling inside the extruder.
BTW, the problems with the LCD and SD card communication are caused by electronic interference due to lack of shielding on the cables. I suspect that running the cables through some kind of grounded and insulated metal tube would solve those problems. It might even be possible to cobble together a metal tube using aluminum foil and duct tape.
I listened to your video. The Y axis sounds wrong, like something is broken. I would temporarily take the belt off the Y axis and listen to the motor as it moves without anything attached. If the motor sounds OK, I would then apply some tension to the motor using my fingers and see if it still sounds OK. I would also try moving the bed, again without the motor attached; if that movement is not smooth, then the problem might be with the 3 linear bearings below the bed.
If the problem is with the bearings, you might be able to do what I did a few months back and just lubricate the 2 Y bars using a spray containing Teflon from the hardware store.
Thanks I’ll also try that. I’ll give you feedback when done.
I printed marvin at the lower flow but I got severe under extrusion… So probably it is not that.
2 months later
So the left side of mine also looks like that, and it vibrates and makes this terrible sound with certain y-axis movements. Suggestions?
2 years later
Sounds like your hotbed is not screwed down properly, or has vibrated loose, my suggestion to you is to flip the unit over, and check every screw nut bolt, belt, make sure everything is snug, not reefed down, but snug., belts are tight, but should be able to be squeezed to touch each other in center of axis., check the gears on the x, y, and extruder, they should be tight, the extruder is brass and soft , check if it’s stripped, I had to tap mine to next larger size , m4 x 70 thread, very easy job, and use next larger grub screw., once yo do all this, then the two z axis screws are not centered, to the left end of the axis there are two screws that hit the end of the two horizontal smooth rods, they push on the ends to help fine tune the level of your x axis by loosening one and tightening the other, you can level it, thereby centering the rods., I only wrote this for others searching the issues normal., I would guess this is a mechanical problem vs software…