Question 1

Can this be printed on a Bowden tube vs Direct Drive printer?

Accepted Answer

Yes, this can be printed on a Bowden tube vs Direct Drive printer, but we have some PRINTING TIPS:

Recommended for printers with direct drive extruder, 0.4~0.8mm Nozzles.
With bowden extruder you might pay more attention to these tips:

- Print slow 15-30 mm/s Printing speed
- First layer settings. (Height 100% Width 150% speed 50% e.g.)
- Retraction disabled. This would reduce messy, stringing or oozing printing result.
- Increase Multiplier(Optional). set to 1.1 would help the filament bond well. - Cooling fan on after first layer.

If you are having problems printing with soft filaments, firstly, and most importantly, slow the print down, run at 20mm/s will work perfectly.

It is important when loading the filament to allow it to only just start extruding. Once you see the filament coming out the nozzle hit stop. The load feature pushes filament through quicker than a normal print and this can cause it to get caught in the extruder gear.

Also feed the filament direct to the extruder, not through the feeder tube. This reduces the drag on the filament which can cause the gear to slip on the filament.

Question 2

Does this print on prusa i3 mk2s without any modifications?

Accepted Answer

It does work on the MK2, not as well as my E3D Titan but I have put a few jobs through my MK2 extruder with SainSmart TPU. Since the TPU is a bit stiffer than say a NinjaFlex, it's pretty easy as long as you slow the print job down a bit, loosen the tension slightly, and make sure you use a buffer on your bed such as a glue stick. If you try to print the TPU directly to a PEI surface it is very difficult to remove.

Question 3

I am looking at printing gaskets and wheels for model cars and would like to know how sticky this product is after it has been printed?

Accepted Answer

I've not tried the purple TPU,  I recently purchased Purple PETG. However, I have printed SainSmart Black TPU and I like it a lot. I use it for gaskets but I don't find it sticky. It's flexible but firm and not squishy.  When I need super flexibility like rubber diaphragms I use other filaments that are very flexible. For static display model cars it would be good but for remote control cars it may be too stiff.

Question 4

Has anyone printed with this using the Flashforge Finder?

Accepted Answer

I've been using it on a Creality CR10 and it works very nice.

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SainSmartTPU-RED-0.25KG1.75 SAINSMART 1.75mm 250g Flexible TPU 3D Printing Filament, Dimensional Accuracy +/- 0.05 mm (Red)

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