2 ends for the slide. One is being clamped for gluing, the other shows component layers.
So these are cut in 3 pieces of 1/2" plywood. The first has a 1" hole pocket cut 1/4" deep, the innermost has a hole removing material from the center. I put some “scrap” 1" tube in (Actually the rails from my first ZenXY build) to keep the layers straight while the glue sets up. They’ll be 1 1/2" thick with the tube fitting in 1 1/4" into each side. The bearing holders are the weak point so this really is overkill, but helps enforce squareness as well as providing strength.
I’m short a few 608 skate bearings, they’ll be here tomorrow, I think. Or Tuesday. One package arrives tomorrow, one Tuesday, can’t remember which is which. The skillsaw sled is almost exactly 12" long, and a little under 18" wide. I’m going to make the rails 72" which is more than enough to deal with ripping up to full width sheets. I don’t have the height in either the garage or the basement to do a 9’ slide. I’d have to put an untenable slope on the slide, and wouldn’t be able to reach the top anyway.
I need to figure out a clamping solution to hold the sheets down so the saw doesn’t try to lift the work.
I will ask at work about some 2X2X0.125" tube and maybe build the frame for the panel saw from that, with some 2x4 bolted to it. That will also serve as welding practice for the LR2 table.
At this point, it’s looking like making the table from steel will be cheaper than lumber. Ridiculous, and I know it’s much worse in the USA. Still needs a wood skin for the surface I suppose.