Uses M3 threaded inserts.
 

The hanger is symmetrical, you just print two of them, sandwich them together with the webbing in the middle.  I used an awl to spread the fibres of the webbing apart so the screws could pass through it.  One could also use a hot piece of wire if that's not working for you.

A 2 meter jpole ("farajay") made using conductive faraday tape (10mm) on a polyester webbing backing. The conductive tape can be sewn down to the webbing if necessary without effecting performance.
 

Velocity factor in the tape is.. strange.. so the measurements aren't standard to normal wire, making for one that needs to be a bit longer than your usual jpole for correct resonance.

Measurements for construction:
 

Short leg: 49 cm Long Leg: 148 cm Feedpoint (measure from bottom): 9.5 cm