I did a fair bit with the vertical joinery thing:
https://cutrocket.com/p/5cb536396c281
but after working with them for a while, grew to mislike them for a couple of reasons:
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it requires multiple setups — at least 3: first cut all parts to size; second mount four boards and cut two pairs of joints at two corners; third, rotate boards into the correct orientation and cut the balance of the joints
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potential for error
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joint geometry limited by tool geometry
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end grain is like a belly button, you know (almost) everyone has one (knew one guy who had his removed in surgery when it was deemed that there was no viable way to preserve it), but mostly, one doesn’t want to see them…
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if I’m going to cut dovetails, might as well do it by hand:
