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Awesome work! Would you be willing to give a link to the model file? :P
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I believe what the books were referring to was dissolved gasses in the metal. When you melt any metal, a certain amount of air will dissolve into it, which can be a problem when pouring as the metal cools, the gas comes out of solution, and the metal bubbles. That being said, I haven't actually had any trouble with it in my projects, so I believe the heat exchanging benefits and the extra alloying time (It actually seems to create a more uniform alloy, in my experience) justify putting the tin in the bottom of the crucible. You do definitely have a point, though, and I'll beef up the alloying section with this information and possible alternative ways of doing it. Thank you!
I'll look for a different tutorial and make a few edits with this in mind. Thank you!
The 80/20 was in fact a typo, so I don't currently have anything cast in it and don't know how well it would perform as a weapon. ...I might try making a little bit though, if I get the time, just to see what its properties are. Anyway, thank you for catching it!
And yes, that ratio would get you bell bronze
Yes, you are ABSOLUTELY right! That is supposed to be 12%, not 20%--that was a huccup on my part. Thank you! Editing it now.
Thank you for your question! No, heat treatment doesn't do the same thing for bronze as it does for steel. You CAN harden it, though, by cold forging the edges of the blade (basically carefully hitting the edges with a hammer) This hardens the metal in these places at the expense of ductility.
Cast a Celtic Bronze Sword (Beautiful, Authentic Leaf-Shaped Ewart Park)--Easier and Cheaper Than You Think!
Cast a Celtic Bronze Sword ...View Instructable »
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