Method X Max Extrusion Speed Firmware Limit
by EgemenErtemHi,
I am printing with a custom made 0.8mm nozzle on my Method X, but the problem I am facing is the maximum extrusion speed seems to be limited by the firmware to 10.2mm/s for 200mm/s printing using 0.4mm nozzle. So, 200mm/s XY speed at with 0.4 nozzle is limited to about 50mm/s with a 0.8 nozzle. Good news is still, I managed to get twice as quick prints compared to my 5th Gen Replicator with 0.8 nozzle and fast settings.
Considering how well built Method is, I think this is well below the capability of the machine itself because I didn't get temperature fluctuations, layer shift or filament slip during my tests, and the extruder temperature was quite low as well. (Really love Method X!!!)
Increasing the "Filament Diameter" (same effect as lowering all extrusion multipliers), decreased the print time estimation. This suggests that the limiting factor is purely the extrusion feed rate. Modifying the feed rate from meta and toolpath hasn't speed it up as well.
I think currently E0 stepper is running at about 460 rpm, but putting light pressure on the filament doesn't stop it pulling the filament, so I think there is a margin of allowance there, which I am willing to play with:)
I would really appreciate your suggestions.
I would be happy to collaborate with MakerBot using a custom firmware with increased speed limit to try printing fast using a 0.8 nozzle.
Many thanks.
Kindest Regards,
Egemen Ertem