Sel, You are right...
If you use a cast fake die to struck coins on "cold" blanks, The dies rarely will survive to the struck or very few dozens of "coins" but...
The point is using cold cast fake dies to struck coins on "hot" blanks, with the temperature grows up, the blank is more easy to struck, you need much less force to strike the blank so the die will survive for several HUNDREDS of coins.
This is the same method used by ancients to struck their coins with bronze dies...
If you use a cast fake die to struck coins on "cold" blanks, The dies rarely will survive to the struck or very few dozens of "coins" but...
The point is using cold cast fake dies to struck coins on "hot" blanks, with the temperature grows up, the blank is more easy to struck, you need much less force to strike the blank so the die will survive for several HUNDREDS of coins.
This is the same method used by ancients to struck their coins with bronze dies...






















