I thought at one time to get the speed really down. To create a separate intermediate shaft and pulleys. The max speed is 3,500 stiches per minute or about 60 per second as is.

The only thing I ever did with my old singer industrial model 196K5 was new floormats for a 114 coupe. I think really slowed down enough it would have seen more use.

It has sat under a pile of stuff for years now. I think about a tenth the speed it has now would be about right for me. Or perhaps even less. Lots of power and will not handle heavy leather but almost useless at my skill level speed wise as it is. I also have no ideal of the machines background. The table appears as new and no noticeable wear on the machine but I feel the machine was in another table at one time.