First layer inconsistent
Hi all,
I fixed my friends Prusa mk3s after his hotend clogged up due to a spagetti printing error. I have disassembled it, cleaned it, fixed it and re-assembled it. It passes all the self tests etc.
So I went over to printables and printed the first layer calibration (FLC) file.
Set-up: Prusa mk3s & PrusaSlicer v2.5, AMZ3D black PLA 1.75mm@ 210C nozzle (215Cfirst layer) and 60C bed, 0.4mm brass nozzle
Results:
So -1.1mm z-axis offset seems to be a good value. Let's try to optimise it further.
I settled for - 1.15mm in the end. So let's get printing 🙂 And the result of the first layer looks like this:
I have no idea why this looks so different. It looks like the nozzle is too far away? If I print another FLC it loos like that.
Any help is greatly appreciated as I'm getting a bit frustrated with the printing issues.
RE: First layer inconsistent
Was the print done at a different temperature to the calibration prints ? The pinda is temp sensitive so if you calibrate and print without warming things up to the same temps you can get different results.
RE: First layer inconsistent
Hi,
Yes both prints were done with the same temperature settings.
RE: First layer inconsistent
I don't mean the temperature settings in the profiles, I mean did you preheat the printer bed to let it soak heat through and was the ambient temperature the same for both?
To get things really consistent the bed should be preheated and let the heat soak through to all the parts of the bed for thermal expansion to equalise. The same preheat can also be used to warm the pinda if you position the extruder suitably, such that whenever you print the whole system is at the same temperature.
RE: First layer inconsistent
No I did not pre-heat the bed.
I did a test after pre-heating the bed and then I got similar issues as in my initial post. After adjusting the offset. The first layer then looked better.
Thanks a lot for your help!
As a rule of thumb how long do you pre-heat?