I work for a plastic distributor and we sell a lot of polyethylene which is what the sabots are made of. Great stuff, slicker than snot, but it melts if there is enough friction and gums up our saw blades. we have found nothing that actually dissolves it. Wish there was 'cause we could use that as a glue to weld pieces together. Lacquer thinner seems to loosen the stuff off of the saw blades so we can brush/peel it off. The best you can hope for is to soften it and boiling water is cheaper and less explosive than thinners.