We cut the supports 16 in. long, but you can place the second shelf at whatever height you like. Screw the end supports to the walls at each end. Use drywall anchors if you can’t hit a stud. Then mark the position of the middle supports onto the top and bottom shelves with a square and drill 5/32-in. clearance holes through the shelves. Drive 1-5/8-in. screws through the shelf into the supports. You can apply this same concept to garage storage. See how to build double-decker garage storage shelves here.
It’s okay to buy wood with knots, splits, cracks, and checks. These defects affect only a small area of the board (if they exist over the majority of the board, don’t buy it), so you can plan your cuts around them. Avoid boards with warps, twists, or bows. It takes a lot of time to flatten a board that has one of these defects. To test for these defects, place one end of the board on the floor and hold the other end to your eye. The board should be straight and true. If not, leave it there.
After you have chosen the perfect table saw for your wood shop, the next major purchase one should consider would be a compound miter saw. While not as expensive as a quality table saw, a compound miter saw is invaluable for cutting compound angles (beveled, mitered and combination cuts) on the ends of a piece of stock. Once you develop your ability to make precise cuts with a compound miter saw, you'll find that your circular saw spends a little more time in the drawer than it used to.
But until then, I’ve been thinking of other ways to use my hands and create things. (Even though many of our saws and tools have been stolen.) But I’m feeling a little antsy to make some quick projects, because creating makes me extremely happy…..so we’re calling this surge in me to create something simple, THERAPY. In fact, I need to call up a few friends and have them make some with me because friends and creating is a favorite combo of mine! (Any out of town-ers want to fly in?! ;) )