0.6 Nozzle Start of outer perimeters/seam under extrusion
Switched to a 0.6 hardened steel nozzle and using the Prusa profiles for 0.6 I am running into an issue that at the start of the other perimeter it is under extruding leaving uneven gaps. I have tried classis and arachne. PLA 0.4 layer height, Hotend Temp 220 first/ 215 rest
Before I realized it was at the start not the end of the perimeter I tried tweaking the Linear Advance rate to no success (obviously since its effecting the wrong end) I don't know if I need to reduce retraction a bit or line start shape or another thing. I did increase the temps by 5*C on the hotend since I saw that with hardened steel you need to increase for them. Thanks for the help.
This print made me realize there was an issue
These were arachne with tweaks to Linear Advance, went from 0.4 to 0.3 to 0.2
Sliced with classic, a bit better since it's fully on the corner but still an issue
RE: 0.6 Nozzle Start of outer perimeters/seam under extrusion
Since I can't edit it anymore this PETG print just finished and it's even worse. I am also having cobwebbing occasionally as seen on this print.
RE: 0.6 Nozzle Start of outer perimeters/seam under extrusion
Turns out my nozzle threads weren’t long enough and i was loosing pressure out of the top of the heater block and it was an ozzy mess.
RE: 0.6 Nozzle Start of outer perimeters/seam under extrusion
Mk8 nozzles have 1.5mm less thread than e3dV6 nozzles. maybe you had the wrong type
cleaning up after this can be a problem,
I use heat and a wire brush to clean the external threads on the heatbreak and the nozzle, and an M6 tap. to clear the internal threads in the heater block
it is important to get the heatbreak and nozzle correctly alligned in the heat block, see above.
Don't forget to re do, liveZ adjustment after fitting a new nozzle
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility.Location Halifax UK