Reply To: Advice on how to join / joint the legs for coffee table

An internal glue block will increase the structural strength of the join considerably. It need not extend the full length of the leg; if you don’t want it to be seen you could restrict it to just the top half so that it is shielded from view by the table top when looking down on it.

As well as increasing your glue surface, it can be screwed more or less invisibly into both pieces of the L of the leg.