Cuts a lot faster than we expected! Faster than a blunt junior hacksaw blade...

Pump flow is something we might look at. If you start without it running (which is what I normally do for demonstrations) you hear the spark quality go down after a few seconds and pick up once the pump is started. So, some flow is needed. At the moment, we probably have too much flow for this thin material, but I'm not sure that there is enough for the thicker cut like the HSS toolbit. The debris can build up in the cut behind the wire and almost weld the waste material back to the bulk. A nozzle to direct the flow would help. Commercial machines tend to blast liquid at to and bottom, I believe, but that's for much thicker cuts than we anticipate.