Thermally conductive 3D printing filament?

Seeing a couple of 3D printed lights in the current OL Contest (as well as 1 mockup) made me think…are there any filaments with fair thermal conductivity?

The answer is yes. A quick search gave me this:
https://tcpoly.com/products/filaments/

4 K/W rigid filament, 8 K/W flexible (How flexible? Is it suitable?).
Not as good as metals but ought to be fair enough. And even though the filament isn’t cheap, 3D printing with it is much more available than machining.

Has anyone tried this filament or some other which also offers good thermals?

numbers look pretty good, interesting find, Agro. flexible is as flexible as tpu filament, which is like rubber,

i wonder what its mechanical properties are, i see datasheet has some numbers but they don’t tell me a thing. but it won’t take long before someone tries and posts a video on youtube

now that i’m comparing the numbers, it does not look that good, thermal conductivity of aluminum is about 200, for this plastic, in best case 4. that is 50 times less than AL.

4 K/W is not bad. It’s 1-2 orders of magnitude better than wood or regular plastic. It’s about as good as high quality (but not top notch) thermal adhesives.
As I said, it’s not nearly as good as metals. It’s not a good choice as a main building material of high power lights. But it’s good enough as the main case material for medium power lights, as long as internals are metal and well made.
And in high power lights it could be fair enough, as long as there’s a metal frame to spread heat around.

I was thinking about this recently as well. Create a metal heatsink/pill that contains the driver/emitter, then print the rest of the light. If you designed the pill smartly, this is an awesome way to create endlessly.

I’m thinking having a 26mm od with 3 thick fins centered about the shelf and very coarse threads on either end for a single cell (or series in plunger format) design base. It’d make a feasible way to have swappable reflectors and experiment with all kinds of exotic optics.