Caroline,
The portability of my MUTT includes quick setup and tear-down too. Since there’s no reason to ever have to fold the machine down, the machine is simply setting loose on the hinge pins. No need to tighten grub screws. When tear-down time comes, de-rail the belt, slip the belt off of the head, tip the head back slightly, and lift. Tuck the belt into the stand to keep it secure, and the head and stand are both ready to be moved. Setup goes as quickly in reverse.
One of the reasons that I chose a 306W for use in our booths was because it’s got an aluminum body and is light-weight for a full-sized ZZ machine. I can carry the machine back and forth to the parking lot with one hand.
One of the reasons that I picked a pressed steel treadle stand was also because of weight. With the short top on it, I gather up the treadle by the flywheel end with a hand truck and take off with it. When I get to the parking lot, it’s easier to load than a cast iron one.
CD in Oklahoma