Bosch T144D 4 in. 6 TPI Speed-for-Wood T-Shank Jigsaw Blades (5-Pack) Review (2026)
By Nate Sawyer, Editor · Updated July 2026
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- Wood
- Plywood
- Fast cuts
- Curves
The Bosch T144D is a 4 in, 6 TPI high-carbon-steel jigsaw blade tuned for speed in wood, plywood and particleboard. Its aggressive tooth pattern chews through thick softwood and framing lumber quickly, and the T-shank fits about 90% of modern jigsaws tool-free. It is an economical fast-cut companion to a fine clean-cut blade - just expect a rougher edge and keep it off metal, which needs a fine HSS blade instead.
Pros
- Aggressive 6 TPI teeth rip through wood far faster than fine finish blades
- 4 in length cuts stock from 1/4 in up to about 2-3/8 in thick
- Universal T-shank mounts tool-free in roughly 90% of jigsaws
Cons
- Coarse teeth leave a splintered edge - not for veneer or finish cuts
- High-carbon steel dulls quickly in hardwoods and cannot cut metal
- Flexes more than a narrow scroll blade on tight curves
Specifications
| TPI | 6 |
|---|---|
| Length | 4 in |
| Material | High-carbon steel (HCS) |
| Shank | T-shank |
| Best cut | Fast, aggressive cuts in wood up to ~2-3/8 in |
Frequently Asked Questions
- When should you use a 6 TPI jigsaw blade?
- When speed matters more than edge quality — rough cutouts, sheathing, framing lumber. The aggressive teeth rip through wood far faster than a fine finish blade, at the cost of a splintered edge that is not acceptable on veneer or show surfaces.
- How thick a board can the T144D cut?
- From about 1/4 in up to roughly 2-3/8 in stock. The 4 in blade length is what sets that ceiling; thicker material needs a longer blade or a different saw.
- Is the T144D good for tight curves?
- Not especially. It flexes more than a narrow scroll blade, so tight radii tend to bow and cut out of square. It is also high-carbon steel, so it dulls quickly in hardwood and cannot cut metal at all.