For the Teflon tube. Get some red paracord. Regular 550 should fit over it nicely. Can get it on Amazon for cheap. Might also make a nice sleeving for all the wires. I know irs used in pc's to make them look pretty.

The kickstarter failed.

That being said they went ahead and brought Tritan and PCTPE into production via other investors. Can be ordered from their site. They are currently back ordered though.

Also note that Tritan needs ~270 printing temp so gonna need all metal hotend.