Oh, the strain gauge sensor. Never heard anyone call it a PRTouch before. It should be plenty accurate, most high end CNC houses use similar tech in their probes.

What in hell is a “PRTouch”?

I know of a BLTouch, the CR-Touch, 3DTouch (off brands and knock-offs) but first time I’ve ever seen any mention of “PRTouch”.

Hell yeah, thanks. Sometimes I get where I can’t see things right in front of me, this was a huge help :)

Can you point out where? Even knowing that it’s there and looking I can’t seem to spot it.

Safety for your equipment, not safety for handling. It’s more than just your nozzle that touches this stuff - your heatbreak, PTFE if you’re using a bowden setup, the drive gear, literally anything the filament touches WILL get destroyed unless made out of a suitable material. E3D, back when they first introduced hardened nozzles for printing abrasive filaments, learned this the hard way. They set up a machine with an overhead spool for a show, and just the filament running across the top bar of the machine, managed to put a GIGANTIC notch into the T-slot and near cut the machine in half. It was quite honestly hilarious to witness.

Sadly, no. I haven’t bought any in a long time. I think CNCKitchen did a video on it: https://www.youtube.com/watch?v=ODQoQd-0ky8

It’s perfectly fine to handle. Carbon fiber in FDM 3D printing is largely a lie. It’s not that there isn’t carbon fiber in there, it’s just that it’s chopped up so finely that it’s practically pointless by the time it’s printed. At best, all it does is destroy any printer not set up to handle it. It’s basically like printing sandpaper. Honestly, I’d avoid it entirely; same goes for glow-in-the-dark. Only reputable supplier I know for GITD is Das Filament, which ball-grinds their glow powder before inclusion into the stock.

If you’re interested in real carbon fiber in FDM prints, the only people to really see are Markforged.