I wanted to use this to print PCB test fixtures for work. I was more interested in the anti-static properties more than the conductive properties. normal ABS is not great for ESD sensitive parts.

I was kind of thinking that was the point.  In an industrial setting one time use or low volume anti-static fixtures are often needed.  This stuff could work great for anything that doesn't need to go through an oven.

of course, that could have been the brand I used...

I wanted to use this to print PCB test fixtures for work. I was more interested in the anti-static properties more than the conductive properties. normal ABS is not great for ESD sensitive parts.

let me know how it goes for you...

http://www.makergeeks.com/coabs3dfi10.html

How did the print go and what did you print?

Remember, as a process,  shielding (EM) is different from grounding (safety).

Copper/aluminum are great for grounding, but IIRC they are useless against 60hz EMI shielding because they are non-ferromagnetic.  I think they might actually work OK for higher frequency EMI, a la faraday cage effect  etc.  I'm sure Jon knows, maybe he can correct me because it's been a while since I looked up this stuff    If memory is correct, then conductive plastic  (assuming the dopant is non-ferrous)  would still be bunk for mains EMI shielding, even if it had low resistance.

I should think that conductive plastic is perfect for touch detection-  eg. a box that knows when it's been picked up.
Maybe someone will come up with a crazy vertical 3d version of the Operation board game!

http://www.thingiverse.com/thing:24225

*The shortest path is a bit tricky. Normally you would assume it's the lowest resistance path. But it's the lowest impedance path. When i was making ground planes on my PCB I learned if the bottom plane does not have some vias getting me back to my grounds on the top layer, then the plane is largely useless because the lowest impedance path for a high frequency signal might still circumvent that large ground plane I made.

Anyway, as you can see I don't know much about this. But I don't know EM is the most important thing that this conductive printing can do.  I have in the past sandwiched tinfoil between two layers of non conductive fabrics and grounded that tinfoil. It was highly effective.

about all I can think of for conductive is to print touch buttons that use resistive or capacitive feedback, in fact I have an application for such a thing, I am not sure how to connect to it tho I guess a printed plastic area directly in contact with a pcb may work to bring a touch switch to the surface.

The resistance is too high to drive anything with it, including leds or buzzers .. so i can only think it would be useful as an input voltage only and that using a fairly high impedance input.

Do you think the filament could block rfid?  Thats a hot topic right now.