I like the bench
@rarefish383.
Does it take down easy and hold together OK without the tennons pegged?
I might copy your design but make through tenons pegged with a tapered wedge you could remove easy.
NO, it was a mother to knock apart, with out any wedges in the end. It took me almost 4 hours to the minute taking it from 4 slabs, to sitting on it. I was told the average height for chairs was 18"s. So, I stacked four piles of left over pavers to 18". Shimmed the front piles just enough to get it to drain water off the back, and give it a little lean into the back. I cut one long slab in half to make the two ends. Clamped them together, squared the bottoms so they would sit level. Drew the arms on the top piece, and while they were still clamped, cut them out with a DeWalt battery reciprocating saw. You can see the ends are about 3 inches thick. With the seat sitting on the pavers, I sat the ends up against the seat. Put a ratchet strap on them and cranked it down. That made it so tight I could work the back in, and put another ratchet strap on it. It was so tight I could sit on it and test it. Then I drew a straight line on top and bottom of both ends of the seat, and lines on both ends of the back, front and back.Took it apart and drew lines between the seat lines to make the tenons. Started at the live edge side and cut into the line, then cut in from the end, leaving a perfect tenon on the seat. Then I took the back and did the same thing. Took the end pieces and marked where I wanted the mortises to be. Put one on the saw horses, and very carefully made a plunge cut with a circular saw. I set the front of the saw on the slab and slowly lowered it into the wood to make the plunge. After I got the two long lines of the mortise cut, I was able to work the two short lines out with the reciprocating saw. Got all 4 of the mortises cut out, then took about an hour with a wood rasp to hand fit them together. I used a big rubber mallet to pound them together. That bench was Tulip Poplar and was pretty easy to work. It sat outside in the weather. It never got loose, not even a little. When I took it apart to sand it back down to pretty wood, it still didn't loosen up. I still had to pound the devil out of it with the mallet. If I was doing a table and benches for inside I might peg them. If you look at the seat on the saw horses, you can see on one end, there is a natural check mark. When I put it back together, I made Black Walnut wedges and pounded them into the check marks. That spread the tenons. But that was mostly for the looks, they were so tight 4, 200 pound guys could rock end to end and not loosen it. Now, if you make the joints so loose they just slide on and off, it will be loose. The other thing, it was heavy, I never worried about any one steeling it, and if they did, they were better men than me.