Attached is a STL of the top part 2 parts of the circular table box.
Showing the typical wood makers male and female tenon approach.
I originally designed and printed the 4 parts? (STL only shows 2 parts) with the base?
not completely closed, This i did not like, as it allowed dust and dirt to get in, so I printed 4 inserts 4 mm thick and glued them in.
Now the circular table is fully protected unless we are flooded out. LOL
Hope of interest, again any questions please ask.
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John
John Lindo