Yeah, I have those but they are too thin at .2mm which just looks awkward with the thick plastic shell. I tried doubling them up but it wasn't fun. I'm looking at etching them from .4mm which is a little thick but will go good with the shell.
Jason
Here's a shot of one from a slightly different angle. Pretty thick.
Thick is always visually relative in N scale. In the picture above, if the grab is 1" diameter, then the stirrup is roughly 3x that maybe slightly more, say ~3.19". 3.19" in N is 0.0199" or 0.5mm thick, so if anything, 0.5" brass would be perfect.
This measurement was calibrated assuming a 1" diameter grab and and is approximate:
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