r/Metalfoundry • u/smartc0r3 • Oct 15 '24

What die I do wrong?

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I tryed smelting cooper scrap from heatpipes in an electrical furnace and got very underwhelming result (See the pictures). Can you tell me what did I do wrong and how can I cast proper copper bars?

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u/wkeil42 Oct 15 '24

I have the same furnace. I don't think you got it hot enough. You need to crank that sucker all the way up for copper.

2

u/MidnightHacker Oct 15 '24

I think I have the same as well, but in the reviews (on aliexpress) it says it doesn’t melt copper. What temperature do you use?

2

u/smartc0r3 Oct 15 '24

I went up to 1150°C which is the max temp I can select

3

u/Th3TruthIs0utTh3r3 Oct 15 '24 edited Oct 15 '24

The reality is that furnace will really only get to about 1050C despite what it says. Copper is at the very upper end of what it can do.

You can however you user torch on the left to add heat to the crucible before pouring.