Free 

Here's an asymmetric guyline ring for a mast or flagpole with a 34.5 od. I made this because I needed to do a specific tie-off that required an odd angle.
It's beefy enough at 1 cm thick and the guy holes are 6mm. All the edges are rounded off to minimize fraying.
I included a spacer in case you need to stand it off from the stage locks on a telescoping pole.
Printing
I used ASA because outside and tensile strength, but a fiber composite would work great too.
100% infill... it's not that heavy and it won't fail easily.
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