Posted by Ed Tavernier on March 20, 2000 at 00:40:02:
In Reply to: Re: What is a "english wheel" and how does it work? posted by Ed Tavernier on March 15, 19100 at 08:51:49:
The two wheels are usually of different radius also, such that the metal being compressed curves due to unequal rates of compression the two surfaces generate on the metal sheet.