Upsetting

upsetting

sorting out the good from the bad

Step 3: Upsetting

It's not the bad blanks but the good ones that are upset. Why is that? Because upsetting is the next step in the process. A machine, called an upsetting mill, raises a rim around the edge of the blank. If you run your fingers around a coin, you can feel this tiny raised edge!
]]
Next, blanks roll through the upsetting mill