![]() ![]() If everything else fails, try going slower. ![]() If you're getting first layer underextrusion, try some Live adjust Z during prints, and see if anything changes. I had problems with first layer underextrusion, turns out I made the calibration badly I should've trusted the calibration I made with PLA filament before all this.Created a set of settings in PrusaSlicer reflecting what I learned, created also a separate printer profile, material profile and set the temperature accordingly, only for this purpose.I might have overdone it, but I am already satisfied with the result, and I would rather have a bit of extra lines on the sides than the cube being not rigid and/or separating. To compensate for the cura slicers' wall overlap, I did give an extrusion multiplier to my material.made sure my Prusa Mini extruder upgrade from Bondtech (Different extrusion GCODE) is included in the printer settings.Keep in mind filament says 200☌ -230☌, according to the manufacturer from the results I got that 9mm retraction is the setting I want to go with also, the temperature settled at 233-235.I found conflicting information online some people claimed it prints so slowly that you could have your fan on 0%, but I disagree prints cleanly only on 100% speed. from the video I have learned that TPU prints slow, but it still requires fans.making a temperature tower, like the video instructed (make sure to double check after how many layers temperature switches, it was wrong to me).making a retraction tower, like the video instructed (make sure to double check after how many layers retraction distance switches).Download newest CURA and add the temperature/retraction towers add-on like instructed, to generate proper GCODE files for calibration.Overall probably like 10g-20g of expensive TPU filament "wasted", but it helped me learn a lot about how to print with it. Next, I printed a temperature tower, and for my TPU (S-FLEX from Spectrum, black color) I found the optimal temperature to be 235 ☌ first layer, 233☌ all other layers. I printed a retraction tower, which shown me that 9mm/s should be best, but possibly even 10mm/s would be OK could test that further. It was a big selling point to me in terms of the Bondtech extruder upgrade which I ended up getting, but I actually never tried to do it on the stock extruder. I'd be interested to see if anyone on the stock extruder managed to print TPU? If you have had any experience printing TPU / flexible filament on the MINI, please share your experiences! This post & thread I think can be of help to someone. The guide is over here and it has a very scientific approach. I wanted to share with everyone a cool video that helped me calibrate my Prusa Mini+ slicer settings well enough to print TPU with it. TPU Printing with Prusa Mini - share your experiences! ![]()
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