KiwiBro
Mill 'em, nails be damned.
Thanks for that extra info Mike. There was a very good write-up comparing almost all of the commonly available modern glues, in a woodworking magazine a while back. Can't put my mouse on it now but essentially all were stronger than the wood fibres. I couldn't tell on my phone the other day but I see squeeze out of the PL glue on my computer now. Like you say, colour is neither here nor there under the table where nobody is going to see.Sorry, I posted more detail on another forum.
Everything is glued together with Loctite PL Premium (3X). It does not match the wood color, but is very strong.
In addition, about every 6" on the board seams I drill a small pocket hole (5/16) and angle in a 2" deck screw. The screws hold things in place, as PL Premium will expand when it dries (24 hrs), and you don't want it pushing things a part. PL Premium alone is strong enough to hold everything, but the cross pieces are very important to keep the wood from cupping. (The one piece pedestals also help with that). This wood was not quarter sawn, and wants to cup on the center line.
I flattened both of the end pieces by cutting the back 3/4 through with the circular saw, glueing (with PL Premium), clamping, then screwing (same procedure as seams). Worked very well. Just monitor for "flat" as you tighten the clamps. (see pic)
Pedestals and cross braces are also glued with the PL Premium, and fastened with 3" deck screws.
Your table looks even better on the computer screen compared to my phone. The pedestals are a clean look. It's going to be great to learn if the wood fibres around the glue are strong enough to resist the ongoing cupping forces not to mention the seasonal dimension variations. The epoxy will help shed water but that's one big block of laminated wood and the rain that falls in the middle is unlikely to shed off the ends/sides. Honestly, I don't know, just suspect it may not handle it in the long run. I hope I'm wrong. It's not like there'll ever be a catastrophic failure given the way you've rebated/tenon-ed the connections, but just that I've never seen anything glued cross-grain in that fashion not go it's own way in the long run. I spy a learning opportunity for me so hopefully we can get some anniversary updates as the years roll by.
Was it a conscious decision to lay all the boards with the rings orientated so the heart was pointing down? I've always done it the other way around, trying to reduce cupping. The way I remember is to let the timber smile (rings form a smile rather than a frown). Obviously provided there is no punky heart/pith wood that's going to rot if exposed to the weather.