RW,<br><br>If I understand your question correctly, the scales (plastic handles) on your Victorinox SAK are loosening. If so, they are properly attached by means of mechanical clamping of the plastic to the metal. We had several SAKs with loosened scales. Look up Victorinox via Google. Telepone them at their warranty service number. The scales are warrantied. Until recently the warranty service in the USA would either replace the scales at no charge if you sent them the knife, OR send you the replacement scales with instructions on installation. Unfortunately, they have discontinued the latter option, or so they have repeadtedly told me. I am unenthusiastic about sending our knives due to the risk of loss. <br><br>Installing the new scales is easy when you get them. Essentially it involves tapping the cushioned plastic scales over the reversed (?) rivets of the metal body of the knife. (Sorry, guys, I'm not an engineer or knife expert, so I don't know the vernacular). I don't know if that proceedure will correct loosened older scales. I am somewhat doubtful of that working -- I think installing the scales involves upsetting the plastic over the negative of a rivet. I doubt the loosened plastic connections have any more capacity to be upset further. <br><br>I would be reluctant to heat the plastic scales. I suspect that under heat (as from our accidental experiences in the washing machine & dryer, and otherwise) the plastic scales tend to warp. Oldest son is now on his 3rd set of scales. :-( Younger son & I each had one loosened set of scales. And, no, I did not forget my knife in my pocket -- I did something dumber. Well, who'd have thought...<br><br>Calling Victorinox for specific guidance seems like the best approach absent any emergency need for repair.<br><br>Good luck,<br><br>John