.75mm Nozzle and print speed
Posted: Sun Nov 10, 2019 3:49 pm
So I picked up a hot end with .75mm nozzle form a forum user who has sold his M2. After installing, cleaning (esun cleaning filament) and setting offset for a .5mm layer at .8 Extursion width I figured I would be able to print fast with a larger nozzle. My model is a simple flat plate 135x168x4mm
This was setup to print 2 shells/tops/bottoms and 20% infill. I tried to run it at 80mmS which is what I would do with a .35 Nozzle on a simples model like this. But I had issues with the perimeter not sticking and being way inside the infill area at corners and under extrusion in the infill I slowed things down to 50mmS and all is well..
So the question is, with a larger nozzle, what are the factors preventing the same speeds. I Assume but have not tested, print temp needs to be higher as a huge amount of plastic in comparison is being extruded at high speed and maybe there is insufficient time for it to melt? Another factor I would guess is mass of the plastic thread being much higher prevents accuracy in turns, even with rounded corners? Anything else I am not thinking of?
Just wondering if anyone has seen similar and found the needed change to compensate. I was using PLA+ which I hate.. when I get time I would like to try this with ABS..
Thanks,
Doug
This was setup to print 2 shells/tops/bottoms and 20% infill. I tried to run it at 80mmS which is what I would do with a .35 Nozzle on a simples model like this. But I had issues with the perimeter not sticking and being way inside the infill area at corners and under extrusion in the infill I slowed things down to 50mmS and all is well..
So the question is, with a larger nozzle, what are the factors preventing the same speeds. I Assume but have not tested, print temp needs to be higher as a huge amount of plastic in comparison is being extruded at high speed and maybe there is insufficient time for it to melt? Another factor I would guess is mass of the plastic thread being much higher prevents accuracy in turns, even with rounded corners? Anything else I am not thinking of?
Just wondering if anyone has seen similar and found the needed change to compensate. I was using PLA+ which I hate.. when I get time I would like to try this with ABS..
Thanks,
Doug