Trying to get an air tight print with 60a tpu

[sour comet]

I've been printing with 60a FilaFlex TPU, printing a finger like object that I can actuate it using compressed air but I have'nt been getting any air tight prints, and some of the prints are even under extruded ( ill show a picture with some of the printing settings).

[olive bane]

AI Help

It sounds like you may be experiencing issues with your print settings, especially with printing flexible filaments like TPU. To improve airtightness and reduce underextrusion, try these troubleshooting steps:

1. Increase the print temperature for TPU to ensure proper flow and adhesion between layers.
2. Slow down the print speed to allow the filament to properly extrude and adhere to the previous layers.
3. Increase the retraction distance to prevent stringing and improve filament flow.
4. Check your extruder calibration to ensure accurate filament feeding.

Please provide the picture of your printing settings for further assistance.

WARNING: This response is AI generated and may contain errors.

[sour comet]

I'm using an original prusa mk4, with no modifications
with this last print, the first half of the print is 225 degrees then changed it to 230 degrees, 125% flow, line width of 0.7 for wall parameters, 0.42 for the rest, printing speed is 8mm/s for perimeters and 10mm/s for the rest, 0.15 layer height

the filament is dried prior to the print starting and also getting dried while its printing

retraction is off, idk what else to try I need help on how to get this under extrusion off and also tips on how to get it air tight, either with printing parameters, or even some modifications that I can do to the printer maybe with the extruder to make it more optimal for soft tpu printing

also what layer height is best for tpu adhesion and how much shoul i do for cooling, in the last print cooling fan was 40% after the third layer and mid way i changed it to 80%