Stripped teeth, missing tips, or a blade that dulls in a few days is rarely “the blade is too soft.” More often too few or too many teeth are in the cut, feed exceeds what the tips can carry, the loop was never broken in, or a tooth hit scale, inclusions, or a weld. Look at whether a whole tooth is gone, only the tip, or one side of the set is flattened—then match that to material and feed before you upgrade construction.
Stripped Teeth Versus Normal Wear
- Normal wear: tips dull gradually, the cut slows and runs hotter, but the teeth are still there.
- Chipped tips: corners break off suddenly, often with a shock noise on entry.
- Stripped teeth: a whole tooth leaves at the root—or, on TCT wood blades, at the carbide tip.
- One side wears flat fast: lost set, biased guides, or a drifting blade. See crooked cuts.
Too Few Teeth or Too Many
Enough teeth must work at once in the thickness you are actually cutting. Too few, and each tooth takes a shock; too many, and chips cannot leave the gullet. That is not one TPI you can reuse on every shape. Solids often need a coarser pitch; thin-wall tube and sheet often need a finer one. Confirm against material, wall, and the saw with the metal TPI guide.
Feed, Material, and Break-In
| What you see | More likely cause | Adjust first |
|---|---|---|
| Tips chip in the first cuts | No break-in, feed too high, scale or weld | Reduce feed, break in, avoid the shock zone |
| Tube strips teeth; solids look fine | TPI too coarse; too few teeth in the wall | Confirm pitch; do not only raise blade speed |
| Sudden pack-up, a group of teeth gone | TPI too fine or poor chip clearance / coolant | Lower feed, clear chips, then revisit pitch |
| Stainless work-hardens, then chips | Blade glazed instead of cutting | Keep a continuous cut; do not dwell in the kerf |
New loops should be broken in before full production load—see how to break in a blade. Stainless notes: blades for stainless. Aluminum gumming: blades for aluminum.
What to Do Next
If the blade is still intact: lower feed, confirm clamping and guides, and do not “try the next bar” on a loop that already lost teeth. Missing teeth raise shock on what remains and often lead to broken blades or drift. Keep the old blade and chips, confirm length with how to measure length, then shop all blades or common lengths such as 72-1/2" and 93-1/2". Construction choice: bi-metal vs carbide vs carbon. Portable sizes: portable guide. More in Blade Guides. Need a second look? Contact DEKOLY.
FAQ
Do stripped teeth mean I must switch to carbide?
No. Many stripping problems are TPI, feed, and break-in. A harder tip will not fix shock or packed chips. Discuss a different construction only when material, output, and current bi-metal results still fail to line up.
Can I keep cutting after a few teeth are missing?
Stop and inspect. Missing teeth multiply load on the teeth that remain. Do not validate the next workpiece on a damaged band.
Should wood and metal tooth failures be handled the same way?
The shock logic is similar, but wood also involves knots, embedded metal, frozen stock, and tooth direction. TCT also depends on tip welding. Do not copy a metal-saw feed habit onto a wood saw—browse wood cutting when you reorder.
Which photos help when you ask for help?
Photograph the tooth line (including the break), the weld, the label or packaging, and the material section. Saw model or nameplate helps. Then reach out via contact with that context.
