
Imachinist S933414Imachinist M42 Bi-Metal Band Saw Blade
M42 bi-metal 93 in blade with 10/14 variable teeth.
- Blade length
- 93.00 in
- Blade material
- Bi-metal M42
- Blades per pack
- 1 pcs
A band saw cuts metal only as well as its blade. For steel, stainless, aluminum and pipe, bi-metal blades with high speed steel or M42 cobalt teeth hold their edge far longer than carbon blades, and the teeth per in must suit the wall thickness you cut. Most of all, the blade length has to match your saw exactly, whether that is a portable band saw or a horizontal shop saw. We put 15 metal-cutting band saw blades on one spec sheet so you can compare them side by side.
Quick answer
Ranked from 15 band saw blades that met our standard, compared on blade material (Bi-metal M42 vs. carbon steel), tooth hardening, blade length.
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M42 bi-metal 93 in blade with 10/14 variable teeth.

DEWALT 18 TPI 3-pack with 8% cobalt.

FOXBC M42 10/14 TPI for many metals.
| Spec | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Best Scoreout of 100 | 80 | 76 | 75 | 72 | 70 | 67 | 62 | 61 | 58 | 57 |
| Blade lengthin | 93.00 in | 32.88 in | 93.00 in | 32.88 in | 27.00 in | 44.88 in | 64.50 in | 93.50 in | 93.50 in | 93.50 in |
| Blade widthin | 0.750 in | 0.500 in | 0.750 in | 0.500 in | 0.500 in | 0.500 in | 0.500 in | 0.750 in | 0.500 in | 0.500 in |
| Blade thicknessin | 0.035 in | 0.020 in | 0.035 in | 0.020 in | 0.020 in | 0.020 in | 0.020 in | 0.035 in | 0.025 in | 0.025 in |
| Teeth per inch | 10/14 | 18 | 10/14 | 24 | 18 | 18 | 24 | 14 | 10/14 | 14 |
| Blade material | Bi-metal M42 | Bi-metal | Bi-metal M42 | Bi-metal | Bi-metal M42 | Bi-metal M42 | Bi-metal M42 | Bi-metal M42 | Bi-metal M42 | Bi-metal M42 |
| Blades per packpcs | 1 pcs | 3 pcs (best in row) | 1 pcs | 3 pcs (best in row) | 3 pcs (best in row) | 3 pcs (best in row) | 2 pcs | 1 pcs | 1 pcs | 1 pcs |
| Mixed assortment | No | No | No | No | No | — | No | No | No | No |
| Saw type | — | Portable | — | Portable | Portable | Portable | — | — | — | — |
| Target material | Metal | Metal | Metal | Metal | Metal | Metal | Metal | Metal | Metal | Metal |
| Hardened teeth | — | Yes | — | Yes | — | — | — | — | — | — |
| Weightlb | 0.68 lb | 0.55 lb | 0.75 lb | 0.30 lb | 0.29 lb (best in row) | 0.49 lb | — | 0.95 lb | 0.46 lb | 0.64 lb |
| Compatible models | 7 x 12 bandsaw | — | — | — | DeWalt DCS377/DCS375, Milwaukee 48-39-0572 | DeWalt DW3983 / DCS374B, Milwaukee 48-39-0521 | WEN 3970, Grizzly G0622, Jet HBS-56S, Shop Fox W1715 | Bandsaws using 93-1/2in x 3/4in blade | 93-1/2 x 1/2 in bandsaws | All bandsaws using 93-1/2in x 1/2in blades |
We reviewed 50 band saw blades and kept only the 15 that pass every check below. Those are ranked by a Best Score built from spec fit for this job, sales rank.
These reviews are based on each blade's published specifications and listing information, in the order of our Best Score.
Imachinist M42 blade for 93 in metal saws
The Imachinist M42 bi-metal blade leads our Best Score at 80. It is 93 in long, 3/4 in wide and 0.035 in thick, tied for the widest and thickest blade on this page, which helps it cut straight in a vertical or horizontal saw that takes this size.
Its M42 grade teeth are a common choice for metal cutting because they hold their edge in steel. The 10/14 TPI variable tooth pattern mixes tooth sizes, which reduces vibration and suits thin pipe, tube and profiles. Imachinist lists it as ideal for soft ferrous metal.
Imachinist also gives a clear guide to tooth sizes, from coarse 3 TPI for thick solids to fine 14 TPI for the thinnest tube, which helps you pick the next blade for different stock. It comes as a single blade. Check that your saw takes a 93 in blade before ordering. For general shop metal cutting, it is the best blade here.
VerdictThe best metal-cutting band saw blade on this page.
DEWALT 18 TPI 3-pack for portable band saws
Second with a Best Score of 76, the DEWALT DW3983C 3-pack fits portable band saws that take 32-7/8-in blades. Its 18 TPI is a good general pitch for conduit, unistrut, threaded rod and light pipe, the everyday work of a portable saw.
The Matrix II high speed steel edge is designed for heat and wear resistance, with 8% cobalt content for added durability. DEWALT lists Rc 65-67 tooth hardness, and an alloy steel backer resists fatigue from flexing around the saw's wheels.
The blade is 0.5 in wide and 0.020 in thick. Three blades in a pack means spares on the job when one dulls or breaks. As a DEWALT blade it is widely sold, so replacements are easy to find. For electricians, plumbers and fabricators with compatible portable saws, it is a dependable everyday blade.
VerdictThe best everyday blade for portable band saws.
FOXBC M42 blade that matches the leader's size
The FOXBC 93 in blade ranks third with a Best Score of 75. It shares the leader's size, 93-in x 3/4 in x 0.035 in, and its 10/14 TPI variable pitch, so it fits any band saw that needs a 93 in long, 3/4 in wide blade.
FOXBC uses M42 bi-metal with 8% cobalt and 2% tungsten to increase durability and abrasion resistance. It lists soft metal, stainless steel, aluminum, brass and plastic among its uses, and it will also cut wood.
It comes as a single blade. Compared with the Imachinist, it covers a broader material list on paper. For owners of 93 in saws who want a second brand to compare, or a spare blade at a good price, it is a solid alternative. Run it at the slow blade speeds metal needs for best life.
VerdictA strong value alternative for 93 in saws.
DEWALT 24 TPI 3-pack for thin metal
Fourth with a Best Score of 72, the DEWALT DW3984C is the fine-tooth version of the DEWALT portable blade. At 24 TPI it suits thin-wall tube, sheet, EMT conduit and small profiles, where coarser blades can snag and strip teeth.
It has the same Matrix II high speed steel edge for heat and wear resistance, 8% cobalt content, Rc 65-67 tooth hardness and an alloy steel backer. It is 32-7/8 in long, 0.5 in wide and 0.020 in thick, and comes as a 3-pack.
A good rule is to keep at least three teeth in the material at once. On thin stock, a 24 TPI blade does that where 18 TPI may not. Many users keep both the 18 and 24 TPI packs on hand. For thin-wall work with a compatible portable saw, it is the blade to choose.
VerdictThe best blade here for thin metal on portable saws.
FOXBC 27 in blades for compact band saws
The FOXBC portable bandsaw blades complete our top five with a Best Score of 70. At 27 in long, they fit compact saws including the DEWALT DCS377, DCS377B, DCS375 and DCS375B and the Milwaukee M12 sub-compact band saw.
They are 0.5 in wide and 0.02 in thick with 18 TPI, made from M42 bi-metal. FOXBC recommends them for common materials 5/32 in to 3/16 in thick and very hard materials 3/16 in to 5/16 in thick.
They come in a 3 pack and are the lightest blades on this page. Compact band saws are popular for one-handed cuts of conduit and threaded rod, and their blades wear quickly, so a value 3-pack makes sense. Check your saw model against the compatibility list before buying. Let the saw's weight do the cutting and avoid forcing it, which keeps these thin blades from twisting or snapping early.
VerdictA value pack for compact band saw owners.
Best among the reviewed tools
Band saw blades must match your saw exactly. Blades here range from 27 in for compact saws to 93.5 in for shop saws. Check your manual or the old blade.
Keep at least three teeth in the material. Fine 18 to 24 TPI suits thin tube and sheet; variable pitches like 10/14 suit pipe and profiles; coarser teeth suit thick solids.
Bi-metal blades with high speed steel or M42 cobalt teeth outlast carbon blades in metal. Cobalt content adds heat and wear resistance.
Metal needs slow blade speeds. Imachinist suggests 100 FPM to 300 FPM for ferrous metals. Too fast burns the teeth quickly.
It depends on thickness. Use 18 to 24 TPI for thin-wall tube, 10/14 TPI for general pipe and profiles, and coarser blades for thick solid bar.
Yes for metal. M42 teeth contain cobalt for heat and wear resistance, so they last much longer than carbon blades in steel.
Check the saw manual or the size printed on the old blade. Portable saws commonly use 27, 32-7/8 or 44-7/8 in blades.
No. Wood blades have too few teeth and run too fast for metal. Use a bi-metal metal-cutting blade at a slow speed.
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