Patch,

Thank you very much for your detailed reply, and for the video. He explains it well.

Just a minor note for future readers regarding the video, the guy says that he uses WD-40 or vinegar on his Q-Tips when removing the excess epoxy, but as one who uses epoxy a lot, I would advise against using vinegar in that application, because vinegar neutralizes the amines in epoxy, and I would be afraid of "poisoning" the epoxy with the vinegar. (In marine use, when we get epoxy all over our hands, we use vinegar to wash our hands and tools, and it breaks down the uncured epoxy allowing you to rinse it off with water, but we keep the vinegar far away from the actual layup to avoid ruining the epoxy.)

(I think I'll probably bed the base in epoxy just to err on the side of caution, to make sure there's an intimate fit between gun and rail.)

Thanks again.

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