<p>Other than the most obvious issue with the filament kinking in the tube, what other issues could arise when trying to print flexibles (<em>i.e. TPU/TPE, Nylon, etc.</em>) with a Bowden style extruder setup? </p>

<p>Can the kinking issue be alleviated by a well-constrained filament path (<em>proper ID</em>) in a properly sized Bowden tube?</p>

[{'answer_id': 7129, 'author': 'Sava', 'author_id': 12917, 'author_profile': 'https://3dprinting.stackexchange.com/users/12917', 'pm_score': 4, 'selected': True, 'text': "<p>As a user of an UM3E, which uses Bowden tubes and has TPU as an available material, I can tell you that the kinking issues can be alleviated or downright avoided. </p>\n\n<p>I've printed quite a few things with the Ultimaker-brand TPU 95, and never had problems with kinking in the tube. </p>\n\n<p>Ultimaker uses 2.85 mm filament, with Bowden tubes adapted for those and a rear motor, i.e. the motor is on the back on the printer and not right on top of the print head.</p>\n\n<p>I personally wouldn't consider Nylon as one of the really flexible material, but that's my opinion. Never had kinking in the Bowden tube with Nylon either in my UM3E.</p>\n"}, {'answer_id': 7165, 'author': 'Brebinator', 'author_id': 13188, 'author_profile': 'https://3dprinting.stackexchange.com/users/13188', 'pm_score': 2, 'selected': False, 'text': '<p>To also validate the first answer, I have been printing with TPU95A for a number of years and it has been one of the most reliable materials to use. The strength of the product alongside the flex makes it a test and production based outcome with fewer issues. My printer for the most part of this experience was the Ultimaker 2+ that has a similar set up to the UM3 with a more traditional hot end.</p>\n\n<p>Cautions: Some older material profiles have the heatbed at 60c. I have always had better outcomes from room temp (no heat on the bed). </p>\n'}]
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