Blade width is how much the band resists bending in the cut, and it also limits how tight a wood curve can be. Thickness is how hard the band works as it flexes around the wheels, and whether it will enter the guide slot you already have. Too wide and the blade may not track, or the guides cannot hold it. Too narrow and a straight cutoff wanders. Too thick fatigues sooner on small wheels; too thin buckles and drifts. Size from the old blade and the saw’s guides—not an unverified model chart.
Width: You Cannot Maximize Stiffness and Curve at Once
- Straight metal cutoff, thick-wall pipe, and solid bar usually want more width so the band yields less under feed. “More width” still has to fit the wheels and guides.
- Wood curves and narrow resaw throats usually want less width, or the blade will twist and crack at the back or gullets—see why blades break.
- Portable saws often accept only the width that machine specifies—see portable sizes.
- “It broke, so order wider” can track worse on a narrow guide or tire, and the cut may drift more—see crooked cuts.
If you do not know the current width, measure gullet to back on the old blade, or photograph the guide opening, then confirm length with how to measure length.
Thickness: It Must Pass the Guides and Survive the Wheels
Thickness has to enter the gap between the guide blocks without becoming a sharp fold on the wheel. Small wheels and a path with more reverse bends fatigue a thick band sooner. Production saws with large wheels and wide guides are where thicker bands are more often discussed. Use the thickness on the old blade and the machine; do not copy a “this wheel diameter requires that thickness” line from an article as a factory rule.
Length is a separate measurement. Wrong pitch with a correct beam still chips or packs—match TPI with the metal TPI guide. Construction choice: bi-metal vs carbide vs carbon.
What to Confirm Before You Order
| Dimension | Why it matters | If there is no old blade |
|---|---|---|
| Width | Matches guides and tire; sets stiffness vs curve | Photo of the guide opening plus a caliper reading |
| Thickness | Matches guide gap and wheel flex | Old pack or photo of the guide side gap |
| Length | The loop must fit; it is not the same as width or thickness | Nameplate or photo showing wheel span |
| TPI | Correct beam, wrong pitch still chips or packs | Material + section; see the TPI guide |
| Saw brand and model | Guides are not always the same inside a series | Nameplate close-up |
Shop Once Spec Is Clear
Browse all blades, metal cutting, or wood cutting. Common lengths: 72-1/2", 93-1/2". More how-tos in Blade Guides. Stuck on width or thickness? Contact DEKOLY with the old blade or guide photos.
FAQ
Does a wider blade always break less?
If the guides and wheels can take it, a wider band is stiffer in a straight cut. If it is wider than the guides allow, tracking suffers and side load can rise, so breakage may not fall. Measure the guides before you add width.
Can I order “a bit thicker” for stability?
No. Extra thickness may not enter the guides, or it may fatigue early on a small wheel. Use the old thickness and the guide gap.
Is width logic the same on metal saws and wood saws?
Both must match wheels and guides. Metal cutoff more often goes wide for a straight cut; wood also needs a narrower band for the smallest curve. Do not copy a metal cutoff width onto a curve-cutting wood saw.
We only know length, not width or thickness. Can we order?
You can start shopping by length collections, but width and thickness still have to be filled in. Length alone does not tell whether the blade will enter the guides.
