You must select the correct Teeth Per Inch for the thickness of material you are cutting. That’s why Dakin-Flathers have created this useful bandsaw teeth per inch chart. Use the bandsaw teeth per inch chart below to select the optimum TPI for your project needs.
To achieve a smoother, more refined cut choose a blade that has more TPI. High TPI configurations should be used on thinner materials and may require a reduced material feed rate through the blade. Thicker materials require a low TPI blade, but may be fed through the blade at a higher feed rate. A regular tooth blade is available in higher TPI blades and produces smoother cuts in all woods.
A bandsaw will make many cuts with precision and speed-when equipped with the right blade for the application. Bandsaw blades differ in thickness, width, length, and tooth configuration. Every time you change from one bandsaw blade width to another, you have to reset the saw’s tracking, tension, and blade guides.
Ideally there should be between 2 and approximately 10 teeth in contact with the material at all times. Generally, choose fewer teeth per inch for thicker materials and more teeth per inch for thinner materials. 18tpi seems to be the happy medium for EMT, strut, threaded rod, etc.
These smooth cuts come at the price of speed since blades with many teeth achieve their fine finish by cutting slowly. At the same feed speed, a fine-tooth blade with a high TPI count is bringing more teeth to bear on the cut, which means that each tooth is responsible for cutting a smaller amount of wood. The 1/2-inch, 3/4-inch and 1-inch blades should be 3 TPI blades, while the thinner blades should have a greater number of teeth per inch.
what tpi for bandsaw blade Related Question:
What TPI is best for cutting wood?
If you’re looking to cut wood or other soft materials, you’ll need a blade with a TPI of 6 up to 20. For harder materials like metal, a TPI between 14 up to 36 is more suitable. The number of teeth can be found on the blade.
What is the best TPI for cutting metal?
Cutting thinner metals, including sheet metal, requires a finer cut. Use 18-24 TPI bi-metal blades. For thicker metals such as steel pipe, angle irons, or tubing, use 14-18 TPI bi-metal blades. For aluminum, an 8-10 TPI blade is best.
Is more TPI better?
Woodworkers quickly learn that the number of teeth-per-inch (TPI) on the blade has a big impact on the quality of a cut. The general rule of thumb is “the more TPI, the smoother the cut.” The true answer, however, is just a little more complicated than that, as you’ll learn once you understand how saw teeth work.
What is 14 TPI for cutting?
8-14 TPI blades are capable of cutting wood and the occasional nail. Demo blades fall into this category. 14-24 TPI is the range of metal cutting, PVC cutting and finish cut blades. The blades cut slowly, but leave being a very smooth edge.
What width 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.
What does 32 TPI mean?
Blades are also described by the number of teeth per inch (TPI). Blades have 14, 18, 24, 32 teeth per 25mm (inch). A blade with 14 TPI is coarse whilst a blade with 32 TPI is very fine.
What is 18 TPI for cutting?
Blades 12-18 TPI are typically used for metal and denser materials as well as finish cuts in wood. The 18-24 TPI range is almost always used for metal cutting. Pro Tip: Always keep 3 teeth in contact with the material being cut.
What blade is best for cutting metal?
Ferrous blades are ideal for cutting metals that contain iron, such as stainless steel or cast iron. Choose a non-ferrous blade when cutting softer metals, like aluminum or copper. For the best results, use a diamond blade that’s rated to cut the type of metal you are working with.
How thick of metal can a bandsaw cut?
Band saws are not suitable for cutting very thin sheet metal; a rule of thumb suggests the metal to be cut should be thicker than the depth of 3 band saw blade teeth, however they are excellent for cutting thin walled profiles such as box and angle.
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.
How many TPI is a fine tooth saw?
Blades with 12 or more TPI are typically labelled as fine-toothed saws.
What is 24 TPI for cutting?
18-24 TPI is the range of metal cutting, PVC cutting and finish cut blades. The blades cut faster then the higher TPI blades and create a smooth edge on the material, the edge is not as smooth as what a higher TPI blade would primarily cut. 24-32 TPI is the range of metal cutting, PVC cutting and finish cut blades.
What is the best TPI for cutting EMT?
The Thin Metal Blade (12/14 TPI) is optimized for best-in-class cuts in thin/extreme metals such as unistrut or EMT conduit but also provides strong performance in tougher thick metals.
What is a 40 tooth saw blade used for?
Crosscut blades, made for cutting across the woodgrain (across the face of a board), have between 40 and 80 teeth and are designed for clean cuts. Smaller gullets separate the teeth. Combination blades can make both rip cuts and crosscuts.
What causes bandsaw blade 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.