When a fast printer becomes slow

Yes, they can also become slow. Today I realized again that I should actually pay more attention to. A 320g TPU Part that I normally print on a Creality S1 over 20 hours with a 0.6mm nozzle was executed due to the load on the other printers on the Bambulab. And after slicing for the Bambulab, it was astonishing that it will take 17 hours as well… Since I didn’t want to change the Bambulab 0.4 nozzle, it will also run 18 hours.

High print speeds are probably gone with:

TPU
0.2 nozzle

Have you noticed anything where the new printer generations become slow again?

Bye the way, I Noticed something else. Normally I print this part with Shore 95A, but after the second attempt I switched to Shore 58D - the filament feed on the Bambu is much more vulnerable on soft materials (at least it didn’t get all this weight through a single print by shore 95A). It almost became clear to me that the all-rounder probably doesn’t exist - the X1C can even lose a fight against an S1, depending on the rules and perspective.

TPU’s volumetric flow rate is set pretty low at 3.2^3/s but with normal TPU you can’t go much past 5 anyway. I’ve found the temperature needs to be 240 minimum or it clogs up

I found it useful to do the ‘max flowrate’ calibration on Orca slicer to get the top flow rate. My TPU (Priline) prints nicely at max volumetric speed of 16. temp is 240. I also back off the pressure on the feed roller by 4 complete turns otherwise it can squash the filament and stop feeding.

Hi Geoffree,

Maybe TPU prints will getting also pretty dam fast by March 2024. The video starts at 3:21