This profile is designed for printing ultra-soft Polymaker PolyFlex TPU90 (Shore 90A) on the Bambu Lab P1P using orcaSlicer. It is ideal for makers and engineers who need reliable, high-quality results with flexible materials. The settings focus on achieving excellent print quality, strong layer adhesion, and consistent extrusion, making it suitable for demanding applications where flexibility and durability are essential.
Printing flexible TPU like PolyFlex TPU90 requires careful tuning to prevent stringing, under-extrusion, and print failures. This profile uses a moderate nozzle temperature of 220 °C and a slow print speed of 30 mm/s to ensure smooth, consistent flow. Retraction is set to a near-zero value (0.5 mm max) to minimize the risk of filament jams and stringing, which is critical for soft, elastic materials. The profile also disables AMS and recommends loading filament directly from an external spool to avoid feeding issues common with flexible filaments.
Nozzle Temperature: Set at 220 °C (225 °C for the first layer) to ensure proper melting and flow of TPU90, balancing print quality and material integrity.
Print Speed: 30 mm/s is used to reduce the risk of under-extrusion and improve surface finish, which is especially important for soft TPU.
Retraction: Limited to 0.5 mm to prevent filament stretching and jams. This is crucial for flexible filaments, which can buckle or tangle if retracted too far.
Bed Adhesion: Brim is recommended to help large, flexible prints stay anchored during printing, reducing the risk of warping or lifting.
Cooling: Moderate fan speeds (up to 80%) are used to solidify layers without causing warping, with extra cooling for overhangs and bridges.
Support: No support is enabled by default, as flexible parts are often designed to avoid the need for supports and to simplify post-processing.