I must custom resize the ID then cut the OD to the correct diameter. The resize process can create defective parts, so there is wasted material
The issue is the amount of force and the travel involved to make 9" inserts. As of right now, my machine maxes out at 5.5".
I could create .670, .678 and .685 inserts fairly rapidly, as that is material ID I stock. All other sizes are custom created.