00:00Which settings worked the best for smaller TPU prints?
00:05And which settings gave good results for bigger TPU prints?
00:10The TPU90 prints were made with a direct drive extruder.
00:15Let's have a look at the first result.
00:21The surface is too rough.
00:23The retraction was set to 7 mm, which was too high.
00:34Probably too little plastic was available for extruding.
00:41The second result was smooth, because retraction was turned off.
00:46Only the inside was a bit too rough at some points.
00:51It was rough where most travel movements took place.
00:57The part was also messy around these travel points after printing.
01:03I changed the retraction again to get the best result.
01:09The third result had the best of the first two combined.
01:15The retraction was turned on again and set to 2 mm.
01:21The surface and also the inside turned out smoother.
01:27Want to help increasing this number? Thanks!
01:32Let's continue with bigger TPU prints now.
01:37This print has many blobs on the surface.
01:45Setting the retraction to 7 mm was the right choice.
01:51The plastic had no time to reach the surface while the extruder was traveling.
01:57Get commercial access to all my 3D files here to sell 3D prints.
02:02Also check out my design and engineering channel where I post many tutorials.
02:07And have a look at my website where everything comes together.
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