We have several wood crates that we use for the safe transport of our weapons and other gear. When I first built them, I neglected to consider how much effort would be involved in getting them from the trailer into hotels or convention centers and other venues. That lesson was one that only took a short while to sink in. Not soon after, I began retro-fitting all of the cases with casters to make moving them less of a burden.
Builder’s note: Harbor Freight runs regular deals on a “mover’s dolly” that has four 3.5″ swivel casters, usually for around $8 (eight bucks). You can’t buy four individual casters for that much. It’s a great deal.
Here are a few pics from the installation of those casters on to the base of the power pack transport case: