goldgee35 said:Oops (honest mistake auction removed) that bar may have some zinc inside..... (fishing weight and tire thingees) .... the clamp definately isnt lead...... Wish i new how to tell lead from zinc... (melts about the same time with propane)
If you're dealing with wheel weights, it's easy with just a bit of practice. Using a large pair of diagonal cutters, squeeze a bit on the weight as though you were going to cut it, then with some pressure applied, twist the cutters so they scrape across the metal. After you've done a few, you'll be able to tell the difference easily.goldgee35 said:Wish i new how to tell lead from zinc...
That's always been an amazing phenomenon to me. In the scrap yard, where I had my last refinery, someone would occasionally bring in an ingot of block tin (defined as a minimum of 98% tin) and we tested it by holding the ingot on the ends and flexing it, like we were trying to bend it. If it made a cracking noise, it was block tin. The sound was subtle, but distinct in a quiet area. These ingots were about 2" thick and 8" long. You weren't really bending them because they were too thick to bend with your hands, but just that flexing pressure made them "crack." As far as I know, this only works will fairly pure tin.snoman said:Tin, if you can find it, makes cracking noises as it's bent.
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