I have just breezed through and love the idea. I would like to make one of these for myself. I have good quality jobsite tools that I have brought to the space before and am willing to bring for this. Most importanty I have a table saw and daddo set to 3/4. If anything else is needed let me know.
it looks like he bolted most if it together which would definitely make it easier to move if required, and make it easy to shim the linear rails as you say. It is hard to make out from the video but it looks like the large tubes on which the linear rails are mounted are themselves adjustable up and down? It looks like a well thought out setup … relatively easy to get it setup.
It looks very solid but also looks heavy … could the bed be made with smaller tubing?