3D Printing of Small Bracket

[curious aardvark]

looks doable.
nylon with carbon fibre added is fairly common.
And a LOT cheaper - even for the good stuff - than onyx.
Yeah the onyx can be used singly or as part of themark forge process. I have to say that the parts they make with the continuous fibre reinforcement are bloody amazing. Really really strong.
Had a go at bending a few bits over the years. Impressive stuff.

This is probably a pretty good analogue to the onyx stuff: https://www.amazon.co.uk/eSUN-Filame...ustrial&sr=1-4
But 1/4 the price.
The casrbon fibre actually makes it easier to print with on a normal machine, as it reduces the viscosity and natural stringiness of the nylon.
It will eat through a brass nozzle fairely quickly - but they're pence to replace.

So i guess the real question here is: why don't you have a 3d printer ?