Coming along, good thing I have a Makita and a drill with a wire wheel.
Curing the Firebox cement, went from 170º to 500º over a 2 hour period. Do not do this and let the wife see.
Rough but seems sound.
Cart is primed, got the old Castor's out and went with 3" replacements with brakes.
Have a lot of items in progress right now, biggest holdup is waiting for the paint to dry.