Carts and hammers must have SMOOTH metal surfaces. They're more like "beveled" for lack of a better term. Apparently, whoever was asked to grind and polish them in a certain arc stopped before they were finished. Combine this with something like polyurethane or similar on the facets of the hammers and I didn't even spend two minutes on that before boxing them up for return. As usual, I suspect the rave reviews are, ahem, dubious as no one with the slightest idea how they're supposed to work would agree with the quality of these 'tools'.
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