Review on TPU 3D Printer Filament: HATCHBOX Shore 95A, 1.75Mm, +/- 0.03Mm Accuracy - 1Kg Spool (Black) by Jeff Morris

Another great filament from HatchBox. This is a fairly firm flexible filament. Not at all like NinjaFlex, which is on the "soft" end of the flexible filaments and requires very slow printing speeds. This HatchBox filament prints at PLA temps and can be run at normal print speeds. It doesn't stick to bare, clean glass like NinjaFlex does (cold or hot) but it gives quality prints although quite a bit stiffer. This is because HatchBox put the flexibility rating up near the top of the scale (95 of 100) while NinjaFlex is down at around 20. When printed at the RX'd 190C extruder temp, the blue will give a very glossy-finish print, similar to their PLA in the same color. I have also recently ordered their red and green flexible filaments and expect the same results as this blue spool has given. The secret of the flexible filaments is to lower the infill for a more flexible printed object, and to increase the infill for a more firm print. Generally, something in the 12-20 range for more flex, 25-35 for more stiffness. Love this stuff. No noticeable odor when printing. Very pleased with this and have resigned my NinjaFlex to the shelf, although it does have some specialized uses.