In a recent thread about sliding table saws James Zhu included this link https://www.thecrazyhorsedolly.com/videos.html which got my attention. I ordered a kit and some casters https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1. This the resultDSCN0580.jpg
This is going to be a real back-saver and make getting material from my vertical storage rack onto the saw and cnc router far easier than before. The sticky rubber dome at the top of the jig makes the vertical to horizontal moves a breeze with no twisting, and you never lift more than half the sheet at a time. If you watch the section in the second video starting at about 4:06 you will see how easy it is to use the sheets's weight to get it where you want it ju-jitsu fashion. You need enough room to swing a small cat, but I am in 1000 sq ft with large stationary machines and it works for me.
I made a couple of modifications to the plans. The kit is designed around stem casters, and in order to keep the same centers with the plate casters I got I widened the base by a couple of inches. I also made a couple of cutouts, added a ledger and modified two of the plywood braces to facilitate using the thing as an a-frame cart. I need to add some friction strips there as well.
Check it out.