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The only thing i can come up with is to start with a long mitre on the edges, use a jig to cut a 45 degree dado on each corner, then inlay the edges/feet?
My concerns are:
- I can't use splines on the mitres, they'll be visible.
- I'll be cutting most of the mitre joint away, leaving very little glue surface.
- I'd have to glue in the feet/edges cross-grain, so the glue will probably fail with wood movement.
The upside is that this is an urn (i guess that's not an upside for everyone involved) so I'll be gluing the lid on, which should provide some extra stability.
Not sure where the tongue and groove is meant to go? But routing that groove into the feet rather than the box itself is a good idea. Might have to make the feet a bit beefier but that shouldn't be a problem. Thanks!