Note: Mr. Hack used wedged tenons (2!) at each joint between a trestle shoe and a trestle post. Me, it's all I can do to keep up with his terminology! The tenons are not visible from the viewpoint provided (nor are the trestle tops, nor the breadboard ends...). Final dimensions, in particular the height, are also not decided (sounds like I haven't done a darn thing!).
One lingering question I have been thinking about is how to cut the (traditional) shape:
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under each trestle shoe (basically a fourbyfour). Is using a mortise attachment on a delta drill press a good way to perform this? -- I don't have either one yet but it appears that I would get a lot of mileage out of it on this project! I've been looking at the Delta (floor) DP. A router table is not available. BTW, due credit to Lew for getting me going on this project, and to Swingman and Leon for their help with SketchUp, or to everyone who taught me so much about electricity, and everyone else who puts up with my posts ! Man--I forgot to wire this bench!!! : ) Having fun...