[TPU]

*TPU stands for thermoplastic polyurethane*

Extruder type: Standard Filastruder with 1.75mm melt filter, full barrrel insulation, and vertical setup with winder.

-10 scale, 1 is Nylon and 10 is acrylic. 4
Picture of my set up:

On the winder laser sensor, I added straws where the PTFE goes to help guide the filament better.
You can find more pictures on my imgur here: http://ggalisky.imgur.com/all/

Printer type: SD2, E3D v6, Bulldog XL, RUMBA + DRV8825, LCD, Glass bed, and Lawsy's Carraiges.

Extrusion temperature: 190-215°C
Extrusion rate without colorant: 8-14 inches per minute.
Extrusion rate with colorant: N/A
Average diameter of filament: 1.65mm
Tolerances: + or - 0.2mm

Comments: TPU off gasses at 230°C, so if you want to extrude or print with this material have a well ventilated area. You definitely need to pre-dry this material to get good tolerances. This stuff does not like to side down the hopper, so a hopper shaker is recomened. Although the tolerances were not that great, some lengths of filament turned out much better. The filament starts to have a rough surface past 210°C, but under 210°C it is smooth. When I used the winder with this material, I skipped out on the PTFE tubing, because the PTFE provided too much friction. Sometimes little balls of it get caught up at the side of the nozzle, and later reattach themselves to a legth of filament. I got this from http://revolve3d.com/

Printing:

Comparison to commercial TPU filament: N/A ( I have never bought a roll of TPU filament thanks to the Filastruder)

Pictures:

The locking arm for the mk5 extruder.

Some of the TPU.

TPU on a printed spool

Here is a video of my set up:
http://www.youtube.com/watch?v=9Fc8QGkYJrw
Here is a video showing how flexible the material is:
http://www.youtube.com/watch?v=5KMDC1J5EUo

Thanks for reading! Questions? Comment? Post a reply down below or PM me.