Well, now. That's pretty cool.

I did a 4' by 4' landing for a stair that was 1&1/4" thick using four pieces of red oak. I used #3 biscuits for alignment spaced 12" apart.

I just bumped a thread on this topic.

I saw three saws at HD outside of Atlanta for $520.

I'd see it before I would say if I could do it or not.

I'd also be interested if other routers with a 4.2" motor used the same adjustment. I thought PC at first, but their rings aren't threaded for the motor base.

I'm not an engineer but I'm going to say "no."

Your load from the tractor is not evenly distributed, there is more load concentrated over the wheels. Some load will transfer to the interior joists but the outside joists neat the wheels are going to take the brunt of it.

I'm guessing some engineer type will be along shortly but I think you're going to need something more robust.

I wonder how dry it is. I notice they have guitar bridges, so at least those should be dry

Remarkable. Thanks for posting this.

that's really nice -- times 2