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.
Band saw blade drift is a tendency of the blade to veer to the left or right while making a cut using the rip fence. The point of the last paragraph is that if the band saw is not set up properly and/or does not have a good quality, sharp blade installed and tensioned correctly, the chances of accurately adjusting for drift are minimal at best. Since there is little that we can do about blade drift at the blade, we adjust the fence to match the drift angle to essentially cancel it out.
Being a happy bandsaw owner has a lot to do with your approach to coping with the fact that a bandsaw simply will not cut straight, or, in the sage words of veteran woodworkers, “Adjusting for drift.” Even the top performing 14″ bandsaw on the market, Powermatic’s 14 Bandsaw 1791216K, comes with a no-frills fence with 4 bolts on top rather than easy and obvious thumbscrews or knobs that say, “Adjust me here!”. Making the bandsaw cut nice and straight with this fence is a snap.
On a typical wood or metal cutting blade the hook or of point of the blade should be pointing down for a vertical blade bandsaw, or for a horizontal blade saw the hook of the teeth should be pointed such that they enter the workpiece first as the blade moves. During regular cutting on a well set up bandsaw the blade will move or bow backwards a bit as you press the workpiece into it. The side guides will assist in keeping the blade cutting straight, but they are not an iron lock on the blade forcing it to cut straight.
what is band saw drift Related Question:
What causes band saw drift?
Drift is cause because the blade buckles under the load. You can see that by stretching a ribbon between 2 points and applying a pressure to one of the edges, it will turn sideway easily. A sharp blade and high blade speed will help a lot with that.
Why do bandsaws wander?
If the wheels are worn and do not have a distinct top to the crown then the blade will not know where to go, and may wander around. This of course can cause poor cut quality and difficulty in setting the guides.
How tight should my bandsaw blade be?
The blade should deflect no more than 1/4 in. A good place to begin is to tension the blade until the meter reads proper tension for the next wider blade. For example, if you’re tensioning a 3/8-in. blade, I would set the scale to 1/2 in.
Why does my bandsaw blade wobble?
The blade on a saw left idle for long periods of time can leave an impression in the rubber tire which might cause erratic tracking. Purchase and install aftermarket replacement tires. (Search for “bandsaw tire” at woodcraft.com.) If you still see a back-and-forth motion, the culprit is probably the wheel itself.
Why does my bandsaw blade burn the wood?
A majority of issues with wood burning is because of a dull saw blade. These blades may not be sharp enough to efficiently cut the wood, and thus create enough friction to heat and burn the wood. What is this? Dull blades make it more challenging to cut, which causes friction as you pass the wood through.
Why won’t my bandsaw cut straight?
Band Saw: Why won’t my band saw cut straight? 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.
What is the margin of safety for the band saw?
Maintain a 4” margin of safety! Your hands MUST be at least 4” away from the blade when the saw is running. 8. Plan ahead saw cuts to avoid backing out of curves whenever possible.
What should I look for in a bandsaw?
The two main things to consider when choosing a band saw are the depth of cut and the throat. The saw’s depth of cut is the distance from the table to the upper blade guides. Many band saws are marketed on this feature alone, which tells the prospective buyer how thick of stock can be cut using the band saw.
Why are my bandsaw cuts wavy?
The clasic cause for wavy lumber is pushing a dull blade past it’s limits. Sharp don’t get it.
What can I cut with a bandsaw?
With the correct blade, a band saw can cut wood or metal, in either curves or straight lines. Blades come in a variety of widths and tooth counts. Narrower blades are good for tighter curves, while wider blades are better at straight cuts.
Why do bandsaw blades break?
Machine Defects Even the best blades can fail if there is something else wrong with your bandsaw, and even a small misalignment of bearings or guides can put a twist in the blade as it goes around. Resulting in tension being applied in all the wrong ways which will lead to early breakage.
How long should a bandsaw blade last?
On average your bandsaw blade should last 6 months to as long as a few years depending on what your cutting with it. Make sure to match your blade strength and quality to the project and material your cutting.
Why does my bandsaw bounce?
A lack of straightness in either the blade or weld could be causing the blade to bounce. Next, it is important to check the blade tension and make sure that it is high enough to keep blade bounce to a minimum. That way, your blade won?t take as much damage.