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The Bandsaw Store

Industry guide

Bandsaw blades that keep fabrication shops cutting

Fabrication shops live on their bandsaw. This page matches bi-metal and carbide blades to the daily mix of solids, box, tube and angle, each welded to your machine's loop length.

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When the bandsaw stops, so does the shop. Steel fabricators, structural steelwork contractors and general engineering job shops all depend on one machine to feed everything downstream. The work it faces changes hour by hour: solid bar in the morning, box section and angle after lunch, a casting or a stainless offcut before the end of the day.

Bi-metal blades carry that mix. A high speed steel tooth edge welded to a flexible alloy steel backing keeps the teeth hard at cutting temperature while the band flexes around the wheels, cut after cut. Choose the right pitch for the section and a good bi-metal band covers the daily run of solids, tubes and profiles. When hard or abrasive sections start slowing the saw down, carbide-tipped blades step in.

Recommended blades for this work

Blades on sale today that suit this work, each with the reason from its own listing. Every one is welded to your machine's length.

Why bi-metal leads in fabrication

Bi-metal blades weld a high speed steel tooth edge, commonly M42 or M51, onto a fatigue-resistant alloy backing. The edge stays hard at cutting temperature while the backing flexes around the wheels without cracking, which is exactly what a saw running all day demands. That combination cuts everything from aluminium to stainless and tool steels, so one blade family covers the daily mix of solids, box, tube and angle. It is why bi-metal is the default in fabrication and engineering workshops.

Carbide-tipped blades carry tungsten carbide tips on an alloy backing (some further coated) and those tips stay hard far beyond HSS temperatures. Step across when the work stops a bi-metal blade or wears it out quickly: titanium, nickel-based high-temperature alloys, hardened and abrasive tool steels, high-silicon aluminium and demanding foundry work. In a fabrication shop that usually means the awkward jobs, large or difficult sections and castings that dull a standard blade quickly. For everything else, stay on bi-metal and spend the difference on the right pitch.

Read the bi-metal blades guideRead the carbide-tipped blades guideShop bi-metal blades

On the saw table

The workpieces this industry actually feeds through a band, and what each asks of the blade.

Bahco 3853 Sandflex Top Fabricator bandsaw blade cutting through a steel channel section on a horizontal bandsaw

Box section and angle

Hollow sections and angle are interrupted cuts: the teeth enter and leave the material at every wall, which is what strips teeth off the wrong blade. A structural pitch on a bi-metal band, like the Sandflex Top Fabricator, is designed for exactly this duty, including the mitre cuts that connect a steel frame. Match the pitch to wall thickness rather than overall section size and the blade lasts.

Solid bar work

Solid bar keeps the whole tooth line in the cut, so the blade needs enough gullet to clear chips and enough beam strength to cut straight. This is where an M42 bi-metal band such as the Morse M42 earns its keep on everything from mild steel to alloy steel. If the same saw sees stainless bar, keep feed pressure positive: stainless work hardens under a rubbing tooth and punishes hesitation.

Castings and hard sections

Castings and hardened or abrasive sections are where a fabrication shop's bi-metal habit gets expensive: the blade cuts, but slower every hour, until the saw becomes the bottleneck. Hardened or abrasive cast iron and tool steel grades, along with high-temperature alloys, sit squarely in carbide territory. A trimetal blade like the Easy-Cut Xtreme EZX keeps carbide life on the difficult work without giving up the general purpose range the rest of the week demands.

Material guides for this industry

Deeper guidance per workpiece, including the blades that genuinely cut it and why.

From the blog

Frequently asked questions

Can one blade handle everything a fabrication shop cuts?

For most of the week, yes: a general purpose bi-metal blade covers the daily mix of solids, box, tube and angle. Where it struggles is at the extremes, thin-walled profiles that suit a dedicated structural blade and hard or abrasive sections that call for carbide. Many shops run a general purpose band as standard and keep a second blade welded and ready for the work that punishes it.

Why do blades lose teeth on box section and angle?

Hollow sections are interrupted cuts: each tooth enters and leaves the material at every wall, hammering the edge in a way solid bar never does. Too coarse a pitch leaves single teeth taking the whole shock and they strip. Choose a blade intended for structural work (such as a fabricator pattern bi-metal band) and match the pitch to the wall thickness rather than the overall size of the section.

How should we handle stainless sections alongside mild steel?

Treat stainless as a different cut, not just harder mild steel. It work hardens under a rubbing tooth, so the blade must bite positively from the first pass; light, hesitant feeds glaze the surface and blunt the band. Most stainless sections in fabrication cut well on high-performance bi-metal, with carbide reserved for the heavy and high-nickel end. Keep coolant generous and do not let a worn blade dwell in the cut.

Tell the blade wizard your material, machine and length and it will narrow the range for you.

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