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The Bandsaw Store

Dakin-Flathers Saw37GRIT

Grit and diamond bandsaw blades

No teeth, just tungsten carbide grit or diamond bonded to a steel band. The edge for glass, ceramics, GRP, graphite and everything else that destroys toothed blades.

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How a toothless blade cuts

Grit and diamond-coated bandsaw blades have no teeth at all. Instead, a steel band carries an edge coating of tungsten carbide grit or diamond, either continuous or interrupted by gullets that help clear dust on deeper cuts. Where a toothed blade severs chips, an abrasive edge grinds: thousands of hard points each remove a fraction of material, leaving a clean, controlled kerf.

That distinction matters because hard, brittle and abrasive workpieces punish teeth. Glass and fired ceramics chip or shatter under individual tooth impacts, while GRP and graphite wear a toothed edge away in minutes. A grit edge sidesteps both failures: there is no impact to start a crack and no discrete cutting edge to blunt. The band simply grinds its way through at whatever pace the material allows.

These blades run on standard bandsaw machines, and we cut and weld them to length in the UK, so a glass shop and a composites trimming line can order the same edge as loops for entirely different saws.

Diamond or tungsten carbide grit

Both Saw37GRIT edges grind rather than bite, so the choice between them comes down to how hard the workpiece is and how much edge you want to pay for. The honest rule: diamond for the hardest materials, tungsten carbide grit for abrasive work short of glass-hard.

Diamond and tungsten carbide grit edges compared across the Saw37GRIT family
ConsiderationDiamond edgeTungsten carbide grit edge
ConstructionSteel band edge-coated in diamond, no conventional teethSteel band edge-coated in tungsten carbide grit, no conventional teeth
Best suited toThe hardest workpieces: glass, industrial ceramics, quartz, silicon materials and concreteGRP, graphite, cast iron skins, wire-reinforced rubber and general abrasive work
Running wet or dryGlass is normally cut wet, and coolant controls dust and heat on most hard-material workCheck the machine's guidance either way; abrasive dust needs extraction, particularly where silica is involved
EconomicsThe premium coating: specify it where the workpiece is too hard for anything elseThe economical grit choice for abrasive work short of glass-hard materials
Published width range13 to 38mm6 to 38mm
Blade we stockSaw37GRIT DiamondSaw37GRIT Tungsten Carbide

Materials these blades cut

The workpieces below are the reason this category exists: every one of them either shatters under tooth impact or wears toothed edges out before the job is done.

Typical grit and diamond workpieces with general cutting guidance
MaterialCutting guidance
GlassDiamond edge, normally run wet. Support the workpiece fully so the exit face cannot chip, feed gently and let the abrasive set the pace.
Industrial ceramicsDiamond edge. Fired technical ceramics shatter under tooth impact, so grind through with a light, steady feed and use coolant to hold heat and dust down.
ConcreteDiamond edge for cured material. Aggregate is punishing, so keep the feed low, and treat the dust seriously: it carries silica.
QuartzDiamond edge, cut wet. Clamp rigidly because brittle corners chip easily, and manage the dust as you would any silica-bearing material.
SiliconDiamond edge. Silicon materials are brittle and often valuable, so use full support and a shallow feed; a steady grind beats a forced one.
GraphiteTungsten carbide grit is the economical edge here. Graphite is soft yet highly abrasive, and its dry dust needs extraction at the machine.
GRPTungsten carbide grit for most work. Glass fibre blunts toothed blades and resin clogs their gullets; an abrasive edge avoids both failure modes.
CompositesGrit edges cut carbon fibre layups and laminates cleanly. Support the laminate and watch the exit face for delamination, especially on thin skins.

TPI and width on a blade with no teeth

Most blade-selection advice starts with tooth pitch. This category is the exception, and knowing why makes the rest of the choice simple.

  1. No teeth means no TPI

    On toothed blades you choose a pitch that keeps roughly 4 to 24 teeth in the cut. A grit edge has no pitch to choose: the whole contact length cuts at once, so section size stops dictating blade selection.

  2. Match the coating to the workpiece

    Diamond takes the hardest materials, including glass, industrial ceramics, quartz and silicon. Tungsten carbide grit is the economical edge for GRP, graphite, cast iron skins and wire-reinforced rubber.

  3. Size the width to the cut

    Wider bands resist deflection and hold a straighter line in deep cuts; narrower bands suit smaller wheels and tighter curves. Published widths run from 6 to 38mm across the two edges.

The Saw37GRIT range

Two edges on one band family, both cut and welded to your length in the UK.

Shop all grit and diamond blades

Where grit and diamond edges are used

One industry guide covers this whole category, because the buyers have one thing in common: workpieces that no toothed blade survives.

Material guides for grit and diamond work

Frequently asked questions

Both Saw37GRIT edges are made to order in the UK, welded to the exact loop length your machine needs.

Order a custom length