We're planning some experiments on AM'ed waveguides, and I just noticed that our WG cal kit uses a flat, square WR42 flange (FBP).
Is it worth printing a choke on the DUT's flange? We're not pressurizing, of course, but if the performance degradation from mating two flat flanges is significant, we might need to consider it seriously.
I had some WR-15 and WR-10 AM waveguides made on the Protolabs AlSi10Mg high-res process. I did not use a choke but I did have the flanges polished; they will do that.
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