I am planning a new workbench and have a bit of a dilemma. While many home shops I have seen on youtube videos utilize the garage (think of all those displaced, cold cars), I have seized our home's basement. I am retired now and intend to use this new roubo style bench for many years, but someday it will need to be moved upstairs and out. The problem is that the 4" hard maple top reaches towards 200 lbs. and the legs etc push another 75 lbs +/-. I thought it might be a good idea to have the legs be detachable. On the other hand, I want this bench to be a monolith for hand planing & etc.
My question then is would an unglued mortise and tenon table top mount be sturdy enough. I could supplement this with some lag bolts through the leg top supports. There is a lot of info on the web regarding how to design them, but not a lot of feedback on how benches performed over time. If you have a sturdy workbench how is the top mounted and how has it handled heavy handwork?