Re-sawing a board into thin, pliable pieces allows you to create curved shapes by bending and gluing the pieces around a form-a process called “Bent lamination.” Marking the board with the cabinetmaker’s triangle allows you to reassemble the thin pieces as they came from the board, so the lamination closely resembles a single piece of bent wood. Partially re-sawing a board on your table saw makes re-sawing with your band saw easier, because the blade has less to cut and the saw kerfs keep it from wandering. It’s a great method to use if your band saw bogs down during full-width re-sawing, and in many cases, it can save time by allowing you to re-saw without installing a re-saw blade.
To get started with resawing, I recommend a band saw of sufficient power and with a large depth of cut. “And, speaking of saw blades: the rule of thumb for resawing is “The wider the better.” Wider blades, 1/2″ and larger, cut straighter, which is the goal. Even if you don’t opt for a “specialty” resaw blade, stick with a wide and open-toothed blade to enhance your resawing activity.
I’ve had perfectly acceptable results resawing with bimetal blades and great results resawing with silicone-carbide, low-tension blades. Drift varies from blade to blade, so follow this simple setup procedure every time you change blades. Because bearings can be used in contact with the blade, they can help the blade run straighter, resulting in less drift.
BLADE DRIFT. A fence alone won’t necessarily guarantee a straight cut, however. Most band saw blades tend to veer slightly to the left or right when cutting. The amount of drift varies with every blade, but you can compensate for it by clamping your fence to match the drift angle. SINGLE-POINT FENCE. Another way to overcome blade drift is to use a single-point fence like the one shown in the left photo above and in the margin. SETTING THE FENCE TO COMPENSATE FOR BLADE DRIFT. FEED RATE & TECHNIQUES. With either style of fence, your saw will help you determine the feed rate for resawing. As a rule, you should push the stock through the blade almost as fast as your saw allows without bogging down or making unusual noise. The biggest frustration with resawing is how quickly a blade becomes too dull to cut effectively.
So I thought it would be useful to write a short article about the physics of bandsaw resawing and how to prevent the blade from wandering. To illustrate some of the concepts, I made a simple “Model” of a bandsaw blade cutting through wood. Even 1/2″ wide blades have enough beam strength for resawing if sufficiently tensioned.
how to resaw with bandsaw Related Question:
What size bandsaw do you need for resawing?
To get started with resawing, I recommend a band saw of sufficient power and with a large depth of cut. Any motor smaller than 1hp and depth of cut less than 10″ will limit your effectiveness. (Some 14″ band saws have about a 6″ maximum cutso you’d be limited to a 12″ wide book-matched panel or less.)
Can any bandsaw resaw?
Just about any bandsaw will do acceptable resawing. For example, all the cuts made in this story were done on an inexpensive, 14-in. bandsaw with a 3/4-hp motor. All we did to the saw was add a riser block to increase its capacity.
What type of bandsaw blade is best for resawing?
Resawing involves making rip cuts in the face of a wide board. So just like you would on the table saw, you’ll want to select a blade with fewer teeth per inch (TPI) than the blades you use for crosscutting or cutting curves. For most 14″ band saws, a 1 ⁄ 2 “-wide blade with 2-3 TPI is a good choice.
How many teeth do you need to resaw a blade?
Typically, a wide 3-tooth-per-inch (tpi) blade provides the perfect blend of aggressive yet smooth cut and sawdust evacuation that resawing requires.
What should I look for in a resaw blade?
The article analyzed the most important features that help determine the performance of a resawing blade, namely blade thickness, blade width, number of teeth per inch, tooth form and durability.
Can a band saw cut curves?
Whether it’s a tight curve or a closed opening, you can cut it on your band saw with a couple of easy tricks. Cutting on the band saw can be the same thing. The narrower the blade, the tighter the spots you can cut; in fact, some band saw blades rival a scroll saw for cutting tight curves.
How much tension should a bandsaw blade be?
For carbon steel toothed blades (cutting blades) this is typically 15,000 to 25,000 PSI. Slitting type blades typically are tensioned in the range of 12,000 to 20,000 PSI. In general bandsaw blades are never tensioned past 35,000 psi.
Why does my bandsaw cut crooked?
When the band saw cuts crooked, a dull blade, improper feeding, loose blade tension or not using a work piece guide could be the cause. Use the rip fence or miter gauge to guide the work piece uniformly through the cutting blade to make straight cuts.