Model resin is plastic so it should work fine. I would roughen up the section where you are going to place it though (a lite sanding should work) so it can get a grip and stick better.
Roy
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To become old and wise, one must survive being young and stupid.
Finally got around to doing a test, looks good. I tried some tamiya putty on a casting block from miniarm. I let it cure overnight and it's now hard as a rock, I scraped it with an exacto blade to see if it would flake off and it doesn't. It will scrape, of course, but seems to be held fast to the resin.
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