Print quality issues  

RE: Print quality issues

The usual suspects ...

Print out the belt tightness gauge - make sure your belts are in the right range.

Check for your pulleys and grub screws being tightened in the right order and tight.

Far out there - PID calibration examples kind of look like that too.

RE: Print quality issues

My money would be on belt issues too. Here’s a link to the belt tension gauge @dan-rogers mentioned:

https://www.prusaprinters.org/prints/46639-tension-meter-for-the-gt2-belts-of-i3-mk3s-or-prus

Works great.

RE: Print quality issues

Thanks for the comments, I'm printing the tension meter at the moment. I'll report back once I have dialed everything. 

RE: Print quality issues

Hi again, 

I have printed that belt tension meter and all looks good to me:

X:

Y:

Also I have done a PID tune at 230 degrees C. 

Checked all the bolts on the printers and well and that helped a bit, still the quality is not as I have seen from that machine:

Do you have any other ideas what can cause this?

I have checked the Bondtech gears as well and cleaned/lubricated them. 

Thanks!

RE: Print quality issues

Finally I was able to figure it out. It was related to the tension of the bondtech extruder gears. I have cleaned them again and tensioned the gears a bit more that solved the issue in my case. 

Thanks both for the help!

RE: Print quality issues

With that last close-up, it became clear it was an under-extrusion situation.  Gears, grub screws, tensioner - yup

RE: Print quality issues

@tinnt

Glad it's working now. I hardly ever have to do it but some filaments may require adjustments to the idler screw

RE: Print quality issues

Good to know

One to watch out for

RE: Print quality issues

Hey @chad.k, 

The problem was not in the belts and pullies, but in the extruder. 

I was able to fix/identify it now. 

Thanks!