I want to modify my wife's desk to add a dictation slide. For those of you
not familiar with the term, its a flat sliding shelf located just below the
desk writing surface. It usually has a small centered knob on the front. You
can pull it out to provide temporary writing space to the right or left of
the person sitting at the desk. I think of it as a cutting board mounted in
a desk with a knob on the front.

I will cut down one of the side drawers to make room for the dictation
slide. What I am not sure about is how to make the joints for the sliding
sides. I prefer to use wood sliding on wood, instead of some kind of metal
shelf hardware. I'm thinking it needs to be some kind of loose fitting
tongue in groove or sliding dovetail.

What do you recommend?

Bob