: Hi all,
: I am planning a couple of bookshelves to be made from a 1/2 inch plywood,
: 35x11 inches in size; some shelves will be fixed in 1/4 inch deep dadoes in
: the sides of the bookcase and others will be "floating", supported by pins
: inserted in 1/2 inch deep holes. The shelves will only be supported on the
: sides; not along the length. Should I worry about the sag of the plywood?
: What's a good length of the shelf that can sustain a load full of books
: without additional lengthwise support?