My experience parallels Kent's. Burning these things in is just way cool. A little flame heat, and the shanks *liquefy*. No spring back, you put them where you want them and that's where they are when they cool. The down side is their tendency to split if torqued to even a moderate degree without heat. Split = dead, and it happens way too easily on my scale. I'm still not a fan of trying to glue a humidity reactive hammer molding to a humidity exempt shank and expecting a stable joint, but I'm not unaccustomed to being in the minority concerning such things. Ron N
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