Proto-pasta CDP11705 Electrically Conductive Carbon Spool , PLA Composite 1. 75 mm, 500 g , Black

Very finicky to print with. High impedance is not great for my purpose.

Worked just like pla+: tough, not stringy, with a matte finish. Much easier to work with than other "conductive pla" brands. Good value for the money, print quality is rarely an issue with the prusa mk4s. This holds true with this filament. It was a little sticky to the pei bed, but nothing a plastic scraper couldn't remove after it cooled down.

Ordered 3 spools and it was unusually brittle. Kept breaking off during feeding into the printer. Have tried other brands of conductive PLA with no issue. Not reccomended.

Four because it costs $100 a kilo but comes on the cheapest imaginable corrugated cardboard spool that keeps getting stuck in the AMS. I've printed dozens of spools with cardboard spools without a problem, will certainly make me think twice about buying from protoplasta again. That said, the filament itself is fine, prints well with stock settings, wasn't brittle and produced good prints. Using just using needle probes in a VOM, resistance was in the low kohm range over about 6". Probably low enough for shielding and strictly speaking, too low for anti-static. while you probably can't use it to carry useful power,, contact with it would cause an annoyingly hard to track down short. Treat it as a conductor and you'll be fine. Update: as I'm writing this and having to clear at least 4 jams so far, it may be more an issue with bad winding than just the spool, in any case, annoying for such an expensive product.

I am part of a community called Makers Making Change. We volunteer our time to make adaptive technology devices. I used this filament to print a palm ball stylus (a ball you can hold to operate touch screens). The original design called for a wire in the ball that runs down to the tip that contacts the screen. I thought about using conductive filament and found the Protopasta stuff. The palm stylus worked perfectly and looks great. The clients said the units worked perfectly. I have gone through two spools already with issue. Good stuff!