Extruder stepper cogging when printing TPU
Hi, I'm learning to use my new MK3S and have been trying to print Flexfill 98A for the last few days. The printer lays down a perfect track to start and prints for about 2 minutes and then the motor starts cogging which I'm assuming is due to a blocked nozzle (it is very difficult to extract!). I have tried many of the suggestions like hotter, colder, slower, new nozzle but it is always the same ending in more or less time. I have tried reducing the tractor gear tension, too low it just skids. The edges of the part and bottom look perfect but when it stops the top surface is very rough. I have added a photo. ABS an PLA print well (except a bit hairy).
Any help would be much appreciated. Thanks
Don
RE: Extruder stepper cogging when printing TPU
That isn't an Awesome Print - posted in the wrong sub-forum 😏
RE: Extruder stepper cogging when printing TPU
lower the volumetric filament speed ( a lot) for flex
RE: Extruder stepper cogging when printing TPU
Sorry all, once I realised I couldn't see how to delete it. 😥
Don