Squaring the bed
Got the Superstrut bed mounted to the table this afternoon.
It is now fixed to one end of the table, so that when the machine is done, it will be able to work over one half of the table space.
I experimented with using 1/4" spring nuts, sans springs, as the hold down mechanism, but ended up going with carriage bolts run up from below, with two fender washers and a regular hex nut. It seems very solid. By grabbing one of the 8020 members, I was able to lift one whole side of the table.