It’s alright to turn the retractions off completely and then try to raise them and watch the results. With lower retractions, there is a lower risk of clogging the nozzle or filament tangling. If you use a different program than PrusaSlicer, try to adjust retractions a little bit. A combination of thin layers and poor bridging can lead to ugly holes and protrusions. However, keep in mind that flexible filaments are not good at bridging and overhangs. But if you need to retain the material flexibility, try to lower the number of perimeters and top/bottom layers. Flexible filaments tend to absorb moisture and can be hard to print when wet.ĭo you need better mechanical resistance? Set more infill and perimeters in PrusaSlicer. Increase the nozzle temperature by 5 ☌, this will lower filament resistance.For Original Prusa printers, we recommend using the “Semiflex or Flexfill 98A” or “Filatech FilaFlex40” profiles that have proper speed settings. With higher speeds, you risk clogging the nozzle or tangling filament into the gears. A typical speed for flexible filaments is usually 20 mm/s, the maximal recommended speed is somewhere between 30 and 40 mm/s. The powder-coated TXT sheet does not need any separation layer - the print will stick just fine and can be easily removed without damaging the surface. If you print on a smooth or satin sheet, apply a separation layer on it (glue stick or Kapton tape should work).If they press too hard, the filament might get entangled in the gears. Loosen the idler so the gears push the filament through only very gently.If you’re not sure, do a cold pull to clean it completely. Important rules for successful printing with flexible filaments With proper print settings, you could print stamps, RC tires, shoe soles, belts, etc. The best use of flexible filament is for printing spacing washers and other high-stress parts. ✖ Hygroscopic material (absorbs moisture) ✔ High mechanical and chemical resistance
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