How to Choose the Right Jigsaw Blade: Types, TPI & Uses
Gloria Langat·
Choosing the right jigsaw blade is essential for achieving the best cut. Learn how blade material, TPI, shank type and other key characteristics can help you choose the right blade for the job.
Choosing the right jigsaw blade can make a big difference to the speed, accuracy and quality of your cut. Different blades are designed for different materials, cutting speeds and finishes. Therefore, using the wrong one can result in rough cuts, damaged materials or unnecessary blade wear.
In this guide, we'll explain the main types of jigsaw blades, what TPI means, the different blade materials available and how to choose the right blade for your job.
What is a Jigsaw Blade?
A jigsaw blade is a narrow, replaceable cutting blade fitted to a jigsaw. It moves rapidly up and down to cut through materials such as wood, metal, plastic and laminate.
Jigsaw blades are available in different lengths, tooth configurations and materials depending on the type of cut required. Some are designed for fast, rough cuts, while others have finer teeth for cleaner, more precise results. Choosing the correct blade also depends on the material thickness and the type of jigsaw you are using.
Types of Jigsaw Blade Materials
Jigsaw blades are made from different materials, each designed for particular cutting tasks. Common options include:
High Carbon Steel (HCS)
HCS jigsaw blades are flexible and are commonly used for cutting softer materials such as softwood, plywood and other non-abrasive wood-based materials.
Their flexibility helps reduce the risk of the blade snapping during use, making HCS blades a good general-purpose choice for many woodworking jobs. However, they tend to wear more quickly when used on harder or more abrasive materials.
HSS jigsaw blades are harder and more resistant to heat than HCS blades. They are commonly used for cutting metals, particularly aluminium and other non-ferrous metals.
HSS blades hold their cutting edge well, but because they are harder and less flexible than HCS blades, they can be more prone to breaking if the blade is twisted or forced during a cut.
Bi-metal blades combine the advantages of HCS and HSS. They typically feature hardened HSS teeth bonded to a flexible HCS body, giving the blade both cutting durability and flexibility.
This construction makes bi-metal blades particularly useful for demanding or frequent cutting applications, including cutting sheet metal, pipes and profiles. They generally last longer than standard HCS or HSS blades when used for suitable applications.
Bi-metal blades combine the advantages of HCS and HSS. They typically feature hardened HSS teeth bonded to a flexible HCS body, giving the blade both cutting durability and flexibility.
This construction makes bi-metal blades particularly useful for demanding or frequent cutting applications, including cutting sheet metal, pipes and profiles. They generally last longer than standard HCS or HSS blades when used for suitable applications.
Which Jigsaw Blade Should You Use for Different Materials?
Material Being Cut
Blade Features to Look For
Best For
Wood
Coarser teeth for fast cuts; finer teeth for cleaner cuts; narrow blades for curves
Softwood, hardwood, plywood, chipboard and MDF
Metal
Higher TPI and finer teeth; durable HSS or bi-metal construction
Sheet metal, steel, aluminium and profiles
Laminate
Fine teeth; down-cut or anti-splinter blade where a clean top edge is important
Laminate flooring, worktops and laminated boards
Plastic
Fine to medium teeth; controlled cutting speed to help reduce heat build-up
Acrylic, PVC and plastic sheet
Tile & Ceramics
Carbide-grit or other purpose-designed abrasive blade
Ceramic tiles and other suitable hard or abrasive materials
Multi-Material
Bi-metal or carbide blade rated for several materials
Jobs involving mixed materials or frequent material changes
Note: Always check the blade manufacturer’s recommended materials and cutting capacities before use, as suitability can vary between individual blade designs.
Additional Jigsaw Blade Characteristics to Consider
T-Shank vs U-Shank Jigsaw Blades
In addition to selecting a blade for the material you are cutting, you must also ensure that the selected blade has the correct shank to fit your jigsaw.
T-shank blades have a T-shaped fitting at the top of the blade and are widely used with modern jigsaws. Many jigsaws use a tool-free blade-changing system, allowing a T-shank blade to be inserted and removed without using a separate tool.
U-shank blades have a U-shaped cut-out at the top of the blade. They are used with jigsaws designed specifically to accept a U-shank fitting and are more commonly associated with older jigsaw designs, although U-shank blades are still available.
Tooth Configuration
The number and size of the teeth on a jigsaw blade affect both cutting speed and the quality of the finished edge. One of the main measurements used to compare blades is TPI, or teeth per inch.
As a general rule, blades with a lower TPI have larger, more widely spaced teeth. These remove material quickly and are well suited to faster cuts, particularly in wood, although they can leave a rougher finish.
Blades with a higher TPI have smaller, more closely spaced teeth. They usually cut more slowly but provide greater control and a cleaner finish. Higher-TPI blades are also commonly used for cutting thinner materials and metal.
When choosing a blade, the TPI should be matched to both the material being cut and its thickness. Teeth that are too coarse for a thin material can catch or produce a rough cut, while a blade with very fine teeth may cut thick material more slowly and struggle to clear waste efficiently.
Length and Width
The length and width of a jigsaw blade can affect the thickness of material it can cut and the type of cut it is best suited to.
Blade length should be chosen according to the thickness of the workpiece. The blade needs to extend beyond the material throughout the cutting stroke, so thicker materials require a longer blade. Always check the manufacturer’s stated cutting capacity before use.
Blade width affects how easily the blade can follow a straight or curved cutting line. Wider blades generally provide greater stability for straight cuts, while narrower blades are better suited to tighter curves and more detailed shapes.
Choosing the correct blade dimensions can help improve control, reduce blade deflection and produce a cleaner, more accurate cut.
Maintenance and Care of Jigsaw Blades
Using the correct blade for the job is one of the best ways to extend its working life. A blade designed for the wrong material or thickness can wear quickly, overheat or become damaged during use.
To help your jigsaw blades last longer:
1. Use the correct blade for the material. Make sure the blade type, tooth configuration and material are suitable for what you are cutting.
2. Avoid forcing the jigsaw through the cut. Applying too much pressure can cause excessive heat, blade deflection and premature tooth wear. Let the blade cut at its own pace.
3. Use the correct cutting speed. Some materials, particularly metals and plastics, can generate significant heat if cut too quickly.
4. Support the workpiece properly. Excessive vibration can make cutting less accurate and place additional strain on the blade.
5. Keep blades clean. Resin, dust and debris can build up on the blade and affect cutting performance. Clean blades after use where necessary.
6. Replace blunt or damaged blades. A worn blade requires more force to cut and can result in poor-quality finishes, overheating or blade breakage.
7. Store blades correctly. Keep unused blades dry and protected from moisture, impact and other tools that could damage the teeth.
Regularly checking the condition of your jigsaw blades and using them within their intended cutting range can help improve performance, produce cleaner cuts and reduce how often blades need to be replaced.
Choosing the right jigsaw blade comes down to matching the blade to the material, type of cut and jigsaw you are using. Factors such as blade material, shank type, TPI, length and width can all affect cutting speed, accuracy and the quality of the finished edge.
Whether you are cutting wood, metal, laminate, plastic or more abrasive materials such as tile, taking the time to select the correct blade can help you achieve cleaner results while reducing unnecessary blade wear.
Explore the range of jigsaw blades at MTN SHOP to find options for a wide variety of materials and cutting applications.
Frequently Asked Questions
The best jigsaw blade for wood depends on the type of cut you need. Lower-TPI blades with larger teeth are generally better for fast cuts, while blades with finer teeth are more suitable when a cleaner finish is required. Narrower blades can also be useful for curved cuts.
Metal generally requires a blade with finer, closely spaced teeth. HSS and bi-metal blades are commonly used for metal cutting, although the correct blade will depend on the type and thickness of the metal.
TPI stands for teeth per inch and refers to the number of teeth along one inch of the blade. A lower TPI generally provides a faster, rougher cut, while a higher TPI tends to produce a slower, cleaner and more controlled cut.
T-shank and U-shank refer to the fitting at the top of the blade that connects it to the jigsaw. T-shank blades are widely used with modern jigsaws, while U-shank blades are more commonly associated with older models. Always check which fitting your jigsaw accepts before buying a blade.
A jigsaw blade may need replacing if it becomes noticeably slower to cut, requires more pressure than usual, produces rough or inaccurate cuts, has damaged or missing teeth, or shows signs of bending or excessive wear.
