[Travis McGee]

Everytime I go to the bank, I ask for 2 rolls of nickels. It’s like getting $8 back in trade for $4, at the current melt value. In a year or two, count on the mint making new nickels out of painted zinc or steel.

[Antoninus]

It’s like getting $8 back in trade for $4, at the current melt value.

Of couse, this is why the feds recently put out a warning reminding folks that it's illegal to melt down US currency.

[Dagny&Hank]

In order of size...
The current dime is 2.27 grams, 17.91 mm in diameter, and 1.35 mm thick.
The current penny is 2.5 grams, 19.05 mm in diameter, and 1.55 mm thick.
The current nickel is 5.0 grams, 21.21 mm in diameter, and 1.95 mm thick.

Suggestion...
Make pennies and nickels which are smaller than dimes.

The present price of copper is about $4 per pound, but let's assume $4.54 per pound so that it works out to 1¢ per gram.
The present price of nickel is about $9 per pound, but let's assume $9.08 per pound so that it works out to 2¢ per gram.

Again make a copper penny but make them 10 mm in diameter, 0.7 mm thick, and 0.5 grams -- which would cost 0.5 cents in copper.

Make a nickel nickel which is 14 mm in diameter, 1.0 mm thick, and 1.37 grams -- which would cost 2.74 cents in nickel.

[TomasUSMC]

Everytime I go to the bank, I ask for 2 rolls of nickels.

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Damn! lol