odoh
12-23-2010, 09:24 PM
I salvage what I can from the scrap yards and frequently haven't a clue what it is.
Most recent were some ingots cast in tobacco can. Lee hardness tester indicated about bhn of linotype ~ should be elated right? Well upon melting, it produce cottage cheese. I scraped it off thinking zinc but, upon pouring into the ingot mould, it produced large metallic bubbles:shock: upon cooling, did another hardnesss test plus, did the ball bearing test using know lino and still seemed to match. Made a point to pour half ingot and secured in my bench vice and whacked it w/a hammer. Sure enuff, it shattered unlike lino in that the break appeared satin, not crystaline which I expected it would like zinc. Texture looked like concrete or broken pottery. Its tuff to get out of the mould and have shrinkage depression in the middle of the ingot.
Any thots what it may be? Needless to say, I'm not gonna take on any more stuff that I don't know for sure what it is. Any comments appreciated ~ have about 8lbs and have a mind to toss it ~ ~ ~
Most recent were some ingots cast in tobacco can. Lee hardness tester indicated about bhn of linotype ~ should be elated right? Well upon melting, it produce cottage cheese. I scraped it off thinking zinc but, upon pouring into the ingot mould, it produced large metallic bubbles:shock: upon cooling, did another hardnesss test plus, did the ball bearing test using know lino and still seemed to match. Made a point to pour half ingot and secured in my bench vice and whacked it w/a hammer. Sure enuff, it shattered unlike lino in that the break appeared satin, not crystaline which I expected it would like zinc. Texture looked like concrete or broken pottery. Its tuff to get out of the mould and have shrinkage depression in the middle of the ingot.
Any thots what it may be? Needless to say, I'm not gonna take on any more stuff that I don't know for sure what it is. Any comments appreciated ~ have about 8lbs and have a mind to toss it ~ ~ ~