I wanted my worktables to be solid but portable. Locking castors are workable but they tend to be unstable.
I have seen some retracting wheel designs on the Vans Air Force forums but I wanted to try something with a foot pedal. The general idea was inspired by the brilliant designs of Carl Holmgren.
I sketched up the design in Solidworks to figure out the dimensions and range of motion that I would need. I made a few tweaks in the final assembly but the math checked out and they work great.
