I have been researching options for modifying my 14" bandsaw to allow for both wood and metal cutting. Blade speed is the primary issue, with the wood cutting saws running about 20 to 30X faster than their metal cutting siblings. Most of the "conversions" I have found use various mechanical devices (gearbox, changes to wheel diameters, etc) to reduce the blade speed. This often results in a saw that is decent for metal cutting, but requires significant effort to change back to wood cutting capable. The "treadmill motor" option seems like a decent idea, but seems a little more involved than I'd want to get (the wiring to get the treadmill controller functioning properly, that is). Then I came across the sewing machine brushless servo motors with controllers ( https://www.ebay.com/itm/Eagle-EA-7...2349624.m46890.l49286&mkrid=711-127632-2357-0 ). These seem like pretty decent motors, and they should supply enough torque at the necessary speeds to do both metal and wood cutting with the push of a button. I'm curious if anyone here has experience with these motors and any things I should look out for. They also seem like a decent option for VS upgrade on a small lathe - something I might also consider for my Jet 1013 belt drive lathe.