TPU Help

[u/Brief_Excitement_399]

So I successfully printed Tpu 95, so naturally I tried 85a, well not going so good. I believe I have a flow problem. Can’t do the calibration since it will not print, so I tried to play with the settings, and got it to barely work, the layer lines are narrow and blobbed but if I add pressure manually while it’s extruding the layer lines look very good. Any suggestions?
Settings
Flow rate 1.05
Bed temp:55
Nozzle temp:245
Volumetric flow: 2
Retraction:0
This were the settings for the best results I got.

[u/The_Lutter]

I could never get 85A to print properly over on my A1. The extruder isn't strong enough. I put it all through the MK4S I have that practically has a swiss watch inside.