Replaced Nozzle
The other day I had to replace the entire hot end; nozzle, block, et al. unfortunately have been banging my head against the wall trying to get this thing calibrated again. Just trying to print something wires them to slow down a lot otherwise it begins to skip lines on infill. Right now running at 1500mm/m with infill at 60% and 1st layer at 25%. Here is the result of such print Attached
Scott
Re: Replaced Nozzle
you need to re do your Live Z adjustment.your nozzle seems way too high!
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
Re: Replaced Nozzle
in your experience, what kind of offset for PETG? I've seen a reference as much as .2 mm
Re: Replaced Nozzle
Hi Scott,
every printer is different,
I can't say as I have the same offset for PLA and PETG on my printers.
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
Re: Replaced Nozzle
A nozzle height of 0.2 (or 1/2 the nozzle width) sounds right to what I recall reading.
Nozzle height and “Live Z” are related but technically different. Nozzle height is an absolute measure, live z is relative to your printer. My understanding of Prusa design may be a bit lacking here, but I believe the Live Z says how far above the point at which the PINDA fires to start printing. (You usually have a negative value for Live Z so it’s really “below”)
So a lot goes into that Live Z, there are tolerances on when the probe fires, and everyone mounts the thing a bit differently and physical tolerances of the various extruder parts, but essentially you’re looking for the live z value that gives you the desired nozzle height. I’m not near the printer today, but IIRC my live Z is -0.607, it I’d be willing to bet that’s the wrong number for you.
Reread and re-run the live z calibration as was said earlier. The new nozzle needs a new value.
When someone asks you if you're a god, you say, "YES!"
Re: Replaced Nozzle
in your experience, what kind of offset for PETG? I've seen a reference as much as .2 mm
Just a little bit higher for PETG than for PLA, but there isn't much in it, is my experience.