Imprecise print

I have following issue:

The prints are imprecise, and fillament is jamming. I have tried to dissasembly hotend and extruder again but it didnt bring any result.

Do you have any ideas what can be wrong?

Thanks

Hi,

It kind of looks like your Extruder is not hot enough.
Are you using ABS or PLA?
What temp are you running?

Hi
I use PLA, i tried to print with various temps from 170 to 200, the result is still not fine. Every time fillament is jamming…

Are you using Velleman PLA ? (the config file is optimized for Velleman PLA)

Hi,

After looking at the picture again.
It maybe that the Z axis is not calibrated and the bed is not level.

I’m using Velleman PLA and i have configuration file from site, so everything is just as in manual.
at the moment of taking this picture Z axis was not fine as you can see. The issue is why extruder lefts some fillament on print?
Does anyone had such problem?

I had the same problem. The extruder nozzle was to high for the first layer.
You can solve the problem by setting the Z-offset to a value of -0.25 in the Slic3r config, Printer Settings.

You can also adjust the Z axis by hand while the first perimeter is being made.