Jacob, yes that is what I meant by supported in two planes. Any joint that would be a butt joint was also designed with a third member that makes that same joint a lap joint as well.
Rick, The dogbones index the pieces but in many cases I also drill rivet holes while the piece is on the CNC which mainly help with indexing but cannot hurt structurally. There are several dry times, I use the 15 minute one. The trick is to find one that sets up fast enough to suit without drying fast enough to clog up the gun between fitments.
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Charley Strickland
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