After wrestling the 100+lbs of 4th-axis plus chuck around one too many times, I started thinking about making a shop crane, but not too much later a lowball bid I threw down on an eBay auction came through and I ended up with a Skyhook. I ditched the existing base as it was way too big and strapped it to a wire mesh cart. It needs outriggers for heavy stuff lifted outboard of the cart (I bolt a chunk of superstrut to the bottom when needed), but works really well for moving the 4th axis RT, big vises and so on around. Highly recommended if you have heavy stuff and don't want to run a ceiling hoist setup. I never got around to actual plans, but I was plotting to make a similar device from a few bits of super-strut and a flat nylon strap winch.
The lathe-chuck hook (lock the horizontal bar in the chuck jaws and lift) is made from a piece of pre-bent 3/4" rigid electrical conduit and some pipe fittings (rigid electrical conduit and pipe share the dimensions and threads, which comes in handy when bodging things together out of hardware store parts). I've tested it up to 200 lbs, so it should work for most anything I have.
The lathe-chuck hook (lock the horizontal bar in the chuck jaws and lift) is made from a piece of pre-bent 3/4" rigid electrical conduit and some pipe fittings (rigid electrical conduit and pipe share the dimensions and threads, which comes in handy when bodging things together out of hardware store parts). I've tested it up to 200 lbs, so it should work for most anything I have.