I'm designing a cabinet for above the sink in the bathroom.
The cabinet part will be either box-joints or dovetails, about 38 " x3
3/4" x 18".The door will be flush with the walls of the cabinet, ~ 38" x 18", and will be 1 1/2" rails and stiles, mortise/tenon, with a rabbet cut out of the back to accept the mirror. Material is 3/4" QSO.
I'll hold the mirror to the rabbet with some small quarter round.
I'm worried about seasonal shrinkage, and I don't know how much of a gap, if any, to leave between the edge of the mirror and the wood. If I place the mirror inside the rabbet with 1/16" play, is that enough to absorb the shrinkage of the wood - is it too much? Do I need to worry about this at all and just aim for a nice snug fit?
TIA
Tanus