How to tension a band saw blade for wood?
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Technical set-up of a band saw for wood: tips on how to adjust your machine
Correct set-up of a band saw is a key prerequisite for efficient cutting, high work productivity and safety. Proper handling also extends the service life of band saw blades and of the machine itself. So how should you set up your band saw for wood? What should you watch out for? Take a look at practical tips based on our own knowledge and the experience of our customers – the advice is useful for both DIYers and professionals.
Technical setup of a wood band saw
Cutting Speeds
Cutting speed has a major effect on cut quality. The appropriate speed differs for different materials – it depends, for example, on the type of wood material, the way you work and whether it is primary processing (processing of raw timber) or secondary processing (finished products). Some band saws for wood allow you to select the band saw blade speed (e.g. Scheppach Basa HBS 261, Makita LB1200F or Scheppach Basa 3-230V). The speeds are either fixed or can be continuously adjusted.
- Set a lower speed for fine work, contour cutting and less productive cutting. The lower the peripheral speed of the band saw blade, the longer the life of the blade. This applies especially to narrow blades (widths 3, 6, 8 and 10 mm).
- Set a higher speed for cutting larger diameters, cutting soft, green wood (especially rip cuts) and for productive cutting. A higher speed is used so that the blade can clear the chip properly and does not choke in the cut. The band saw blade (if it is not blunt) must not resist the material and must not undercut (deflect or wander).
For wood materials, band speed is most often in the range of 370 to 1,500 metres per minute, but on very powerful machines (for example for log cutting) the speed may be significantly higher. It is also important to remember that it is not advisable to cut metals on band saws designed for wood, and do not forget about correct blade tension.
Feed Pressure
Feed pressure into the cut (i.e. the material feed rate) must be light and smooth. Never force the material into the cut with great force – there is a risk of serious injury to the saw operator or damage to the band saw blade. If you feel that you have to push the material hard against the blade, you need to correct this by one of the following steps:
- Increase the band saw blade speed. It is possible that the blade is choking in the cut.
- Reduce the feed rate. You may be trying to cut too fast.
- Select a larger tooth (according to the tooth size table). You can find out more in the article How to choose a band saw blade for wood.
- Check the sharpness of the band saw blade. If the blade is blunt, replace it with a new one.
Kerf (tooth set)
If it is important to you how wide a cut the band saw blade makes in the wood, you will certainly appreciate an overview of the tooth set width (kerf) for the most commonly used blades. To calculate the actual kerf size of a band saw blade in the material, it is advisable to add approx. 0.2 mm to the amount of set, which arises due to vibrations on the band saw (this value may vary depending on the type and condition of the machine).
| Blade type | Blade width and thickness in mm | TPI | Tooth set (kerf) |
|---|---|---|---|
| Flexback | 3x0,65 | 14 Reg | 1,09 mm |
| Flexback | 6x0,65 | 4 Skip | 1,27 mm |
| Flexback | 6x0,65 | 8 Reg | 1,21 mm |
| Flexback | 8x0,65 | 10 Reg | 1,21 mm |
| Flexback | 10x0,65 | 3 Skip | 1,5 mm |
Show full table
Flexback
10x0,65
6 Reg
1,25 mm
Flexback
13x0,65
3 Skip
1,5 mm
Flexback
13x0,65
6 Reg
1,27 mm
Flexback
16x0,65
3 Skip
1,55 mm
Flexback
16x0,65
6 Reg
1,5 mm
Flexback
16x0,65
10 Reg
1,27 mm
Flexback
20x0,8
2 Hook
1,6 mm
Flexback
20x0,8
6 Reg
1,55 mm
Flexback
20x0,8
10 Reg
1,27 mm
Flexback
25x0,9
3 Skip
1,55 mm
Flexback
25x0,9
10 Reg
1,5 mm
Flexback
32x1,1
3 Hook
1,75 mm
Blade type
Blade width and thickness in mm
TPI
Tooth set (kerf)
Carbide Wood
13x0,65
1,5-2
1,2 mm
Carbide Wood
20x0,6
1,5-2
1,2 mm
Carbide Wood
25x0,6
1,5-2
1,2 mm
Blade type
Blade width and thickness in mm
TPI
Tooth set (kerf)
RipperS Premium
27x0,9
2 Hook
1,9 mm
RipperS Premium
32x0,9
1,1 HARD
2 mm
RipperS Premium
32x0,9
1,1 SOFT
2,3 mm
RipperS Premium
32x1,1
1,1 HARD
2,2 mm
RipperS Premium
32x1,1
1,1 SOFT
2,5 mm
RipperS Premium
34x0,9
1,1 HARD
2 mm
RipperS Premium
34x0,9
1,1 SOFT
2,3 mm
RipperS Premium
34x1,1
1,1 HARD
2,2 mm
RipperS Premium
34x1,1
1,1 SOFT
2,5 mm
RipperS Premium
35x0,9
1,1 HARD
2 mm
RipperS Premium
35x0,9
1,1 SOFT
2,3 mm
RipperS Premium
35x1,1
1,1 HARD
2,2 mm
RipperS Premium
35x1,1
1,1 SOFT
2,5 mm
RipperS Premium
38x1,1
1,1 HARD
2,2 mm
RipperS Premium
38x1,1
1,1 SOFT
2,5 mm
RipperS Premium
38x1,3
1,1 HARD
2,4 mm
RipperS Premium
38x1,3
1,1 SOFT
2,7 mm
Also take a look at how to choose the right band saw blade for wood to make sure everything works as it should and your work is efficient. If you are experiencing problems when cutting, the overview of common problems and possible solutions may help you. And if you have any questions, feel free to contact us in the discussion below the article.
Your questions
Hello, thank you for your inquiry.
Based on the description, it doesn't seem to be a problem with the saw blade, but rather with the bandsaw itself – specifically with the motor, the tensioning mechanism, or resistance in the gears. If the saw loses revolutions even with thinner material, it means the motor cannot maintain stable power.
Here are some possible causes:
1. The belt between the motor and the saw wheel – if it's loose or slipping, the saw will lose revolutions under load.
2. With the saw blade tensioned, both wheels should be easy to spin with a finger. If not, there's excessive resistance somewhere (e.g., in the tensioning mechanism, belt drive, or wheel bearings).
3. You are not changing the saw's speed – if it has been cutting correctly until now, the problem is mechanical, not in the speed settings.
4. The saw blade should not be tensioned so tightly that parts of the machine deform or bend, thus creating a braking effect on the wheels. After tensioning the blade, the wheels should still be easily spun by finger without noticeable resistance.
If your saw is still under warranty, we definitely recommend considering a complaint or exchange of the machine – sellers usually resolve such cases without problems by exchanging for a new unit.
Regarding the second question:
Yes, after finishing work, we recommend releasing the tension on the saw blade. This prevents permanent strain on the tensioning mechanism's spring and the blade, thus extending their lifespan.
If you need further assistance, please feel free to contact us.
We wish you success with your sawing. Best regards, The Simonds Team
Good day, thank you for your inquiry – it's difficult to answer remotely, but what comes to mind:
- Poorly fitted or deformed frame
- Insufficient damping (e.g., rubber pads)
- Loose screws or connections
- Improperly tensioned or damaged saw blade
- Unbalanced motor or wheels
Try placing the saw off the trailer and compare the behavior. If needed, feel free to contact us again so we can take a closer look.
Best regards, Pavel Dudr
Dear Sir, some small tabletop band saws have 2 speeds, e.g. 400 m/s and 800 m/s. The lower one is for hardwood, and the higher one is for softwood. Log band saws with a narrow band have a speed of approx. 19 m/s, which usually cannot be changed. If your speed is too low, sawdust, for example, will remain on the wood.
Thank you, good luck, Pavel Dudr
Good day, did you let it "rest"? What about the tension?
I can't advise much like this.
Good day, for log bandsaws, it mainly depends on the width of the blade. If you are using a width of approx. 35 mm, we recommend the following values: Softwood (spruce, pine, poplar): approx. 25–35 m/s, Hardwood (oak, beech, acacia): approx. 20–30 m/s
In practice, most log bandsaws run at 25–30 m/s as an all-rounder. We recommend starting at a lower speed, observe the cut quality and the shape of the chips. If the cut is rough or the blade vibrates – reduce the speed, if the blade
Good afternoon, the reasons why a bandsaw blade cuts crooked can be the following: small tooth pitch, small width or thickness of the bandsaw blade, a loosely tensioned bandsaw blade. I recommend trying a wider blade, for example 13x0.65 or 16x0.65
Regards, Dudr team.