Already using undersized 3/4". Shelves were glued up last night.
Shelves are cut to dimension, less a 1-7/16 wide piece of quartersawn oak on the front. They are not glued in place yet (ran out of 220 grit).
Looks like I'll be trimming all the shelves. If it wasn't $150 in plywood, I'd consider redoing them.
Which is it, "glued up" the shelves or "not glued" in place?
Why would you trim the shelves unless the dados are undersized
So, two mornings ago I set about cutting dadoes. I stacked my bookcase sides up into two piles, aligned the bottom ends, marked off my measurements on both piles from the bottom edge, and then used a square to mark all the dado edges.
NOthin' wrong with this procedure. If you mark up one as a "master" then transfer all the marks down with a square, one pile or two plies it won't matter. One pile is best since the transfer is once rather than twice, but a good master will make them the same. Stops will work equally well, right or wrong they will all be the same from one end.
So now I have four bookcases (sides) with a dado which is 11" long, 1/4" too wide, and the open end is going to fall on the bottom (no support on the underside of the shelf). I've already resigned myself to the fact that I'll probably have to cover the underside of the shelves with a decorative moulding. What can I do to give structural support to the shelf that could be hidden under quart round, shoe molding, etc?
As suggested make a filler piece to close the difference and locate it in the least visible place, under the lower shelves and on top of the higher shelves.
Aside from remaking the sides with new stock, there ain't no good way to make a wide dado more narrow than fill it. Unfortunately, the grain "should" run the same lengthwise, across the dado, but that probably won't happen.
You "could" fill all the dados with length grain pieces and resaw them all, but that probably won't happen either.
Sometimes a "f" up is just that and you either live with and repair it as best as possible, or if you are like me you will just bite the bullet and make new sides.
Remember, measure 2x, cut 1X or in my case measure 1X cut 1X cut 1X again for good measure.
BTW I would never trust anyone else's measurement to be the same as mine, unless we are makin' studs for a frame wall.... 7' - 11 1/8" and a fuzz....