90MM Combination Rolling Mill, Ductile Frame

I've been using this mill daily for two weeks now, and the half-round roller creates perfect ellipses for my ring shanks every time. The 4:1 gear ratio makes it easy to crank through even thicker metal without struggling.

The gears turn smoothly with that 4:1 ratio, and the 50mm flat area stayed dead-on within tolerance on my first pass. I've only run a few pieces through the 3.0mm square slot, but the ductile frame didn't flex at all under pressure.

I was pleasantly surprised by how precise the flat area is, holding within 0.01mm as stated. The 4:1 gear ratio gives just enough mechanical advantage to roll consistently without excessive effort, even with thicker stock.