Hello, all.
I am making a mirror frame (yes, I did a google search). I plan to make it for a 36" x 48" x .5" mirror using some free wide pine flooring that came with my house. I plan to use half-laps for the corner joints with gorilla glue, and will use a piece of hardboard for the backing that will not be inside the rabbet I make for the mirror.
Here is my question: given the mirror's dimensions, how much extra space should I allow for dimensional change of the wood? Should I just cut a rabbet that will allow exactly a 36" x 48" x .5" mirror, or should I allow slightly more space? I am a newbie, and would appreciate any advice y'all could give.
Thanks in advance.
-Barry K.