If this is your first visit, be sure to check out the FAQ You’ll find answers to the frequently asked questions as well as basic rules. You can do it with a table saw but you lose the blade kerf which is much greater than that of a band saw. Just a thought, although if you use the table saw trick as suggested, you’ll save on planer blades as well. The variation in the thicknesses might be caused by the pressure that I placed on the wood as it was going by the blade. I built a special resawing fence to hold the long boards on edge and ensure they stay tight against the fence.
I have 2 of their bandsaws, a planer, a table saw and many hand power tools by Craftsman. You could run that board through a planer until it is 1/2” thick, but that’s wasting 50 percent of the wood. I am resawing on the table saw, so the wider boards are proving to more of a challenge. Wood will cup to the driest side of the board, as dry wood contracts and shrinks. Chris’s suggestion about lightly planing (or jointing) both surfaces of the board before resawing is a good one.
You can also mist the outside with water prior to resawing if it’s cupping badlly due to the outside being so much drier than the inside. A few months back I picked up some pieces of wood down in Portland, and I have been wanting to get some carving going again. The end lesson in all this rambling about the saw is that saw sharpening is not that difficult.
By resawing the board, you can get your 1/2” thick board and a second board that will be slightly less than 1/2” thick, because of the saw kerf. When you’ve found the angle at which the blade tracks without wandering, hold the board in place while you stop the saw and mark the angle on the table (Photo A). If you follow these steps, you’ll be able to resaw boards cleanly, and you can stop wasting all that wood.
In my opinion, the challenging bandsaw job is resawing… cutting thin pieces off wide boards, normally dry hardwood. Only use featherboards before the blade, where the are pushing the uncut wood against the fence and there’s no danger of bending the wood. If the wood is pushed too quickly into the blade, the gullet will fill up with sawdust, and the cutting tips of the bandsaw blade will be buried in sawdust. Start the cut with that tennon saw by all means, then switch to a great big 4TPI ripsaw.