About the square ground beef: We used to have a machine we'd attach to the grinder. We called it "the popper" or "the extruder. After grinding everything once (or twice), for the final grind, we'd attach the popper. A round sleeve was put on the head of the grinder and then the popper clipped onto the sleeve. The ground meat was forced down the popper and it formed the meat into the shape you saw in the video. Only it didn't do only squares. It could make that shape any length you want. We used two settings and had them marked. 1 lb and 1.5 lbs. You could set it to cut less than 1 lb and probably more than 2 lbs too. Or when the cutting part gave you problems, or if you intentionally set it to not cut, you could get any length you wanted. Oh, underneath the ground meat slab that gets formed, there was a roll of waxed paper. Looks just like a toilet paper roll. Same size and same kind of spool. These machines had a lot of problems, but if you knew how to deal with them, it wasn't a big deal. One thing though. They could be dangerous. Due to it's many problems People would bypass the safety that makes it impossible for it to cut when opened. Extremely dangerous. I'm so glad I never saw anyone get hurt. It came close a few times.

I asked about these machines in the old board but got no response.