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kens;n13094 wrote: I experimented with copper enriched with little luck.
In a manner that tin helps lead castability, I found copper enrich to be the opposite, it caused difficult casting.
Also, with the temperatures that we all cast with our equipment, we can only see trace amounts of copper before the required temp goes skyrocket high for our equipment.
We might see something like .1% or .2% copper but our equipment will never see 2.0% at our common temps.
Just my own backyard findings.
I’ve gotten my copper alloy to cast by upping the temp, casting paste for mold temp and adding more tin. Although, I don’t know my copper % I am able to someone repeat it in my alloy. I guess I need to find someone to analyze it for me. For the time being I’m just gonna see how hard it will push.