When sawing wood, take time to consider which side of the material will be facing up. Keep the good side up when you are using a hand saw, scroll saw, band saw or radial-arm saw. Keep the good side down when you are suing a portable circular saw, table saw or sabre saw. The principle is to have the tooth of the blade first break through the rough side of the board or panel.
What size do you need? Many experienced carpenters use a 16 oz. claw hammer for most jobs, but also carry a 20 or 22 oz. framing hammer for their heavier nailing jobs requiring big spikes. For lighter work, a 13 oz. curved claw hammer can be useful. Even a 7 oz. hammer will come in handy for smaller jobs like making picture frames.