This is my first TPU filament and I'm very happy with it so far. I'm using it in my Prusa i3 MK3S+ and have not had any issues printing. I'm printing directly on the textured sheet, but they advise putting something like a glue stick down if you have the smooth sheet. I also followed the Prusa guide for printing with flexibles and loosened the idler tension on my extruderI'm using the Prusa SainSmart TPU profile and there is some minor stringing depending on the model, but not sure how much that can be helped with a flexible filament like TPU. I haven't played around with retraction at all yet and am using the profiles default of 1mm. Perhaps increasing this a bit could help the stringing.
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