Recommendations and Knowlage

Hey there,
Flexible filaments on the Robo series requires modifications to keep the filament path constrained or flexible will noodle out.


as far as materials besides pla I print most everything so you’ll need to be more specific with what you want out of filament.

I buy from amazon, printedsolid.com, zyltech etc. no one place. If your just looking to try new stuff the founder of printer solid runs a company called makerbox. It’s a monthly box with multiple samples of different filament. The easy one is just pla, the explorer is other stuff or a box of both.

hoping all that is helpful lol

 

That’s just shiny pla, should run fine. Silk is referring to the color.

A tube to guide the filament mostly, I think there are a few threads on it. No I don’t think you’ll damage anything but may be a pain to get the jam out. Might try a semi flex or something like colorfabbs gen flex and avoid floppy ones like ninjaflex

 

These jams will be around the extruder gear. As it’s trying to feed if there is an open path the filament will pop out. It is a fun material but the stiffer the flexible the better without modification . Ninja flex is like a rubber band- floppy and stretchy. Something more stiff will be easier

 

Simplify 3D

 

I use Cura. TPU is different than PLA, so don't expect your prints to come out like PLA. Tips for TPU printing:

1) Create a new Material profile just for TPU
2) Create a new Quality profile just for TPU. I recommend modifying the Robo Low quality and then save the profile using a new name.
3) Run the Material temperature higher than the stated filament temperature range.
4) TPU density is higher than PLA. Try setting the density to 1.3 instead of the default density
5) No retraction. Disable it.
6) Slow the printing speed to 1/2 to 1/3 of the default speed. The downside will be longer print times.

Additional items to consider:

I recommend this Mod for your printer. It reduces the drag on the filament as the Extruder pulls filament. Helps prevent stretching of the filament.
http://community.robo3d.com/index.p...eel-support-mod-for-c2-and-r2-printers.23519/

Edit the GCODE scripts in Octoprint, specifically the "Before print job starts" script. Add lines to set the temperature of the initial printing specifically for TPU. I can post a copy of my Octoprint script if necessary. Before using TPU, you would log into Octoprint, uncomment the TPU lines and comment out the PLA lines. Then you would save the script. A bit of work, but saves you from ruining a print by presetting the R2 printer just for TPU filament.

UPDATE:

You can get Cura profiles for two different manufacturers of TPU filament. The finished projects have been posted to this forum.