What Blade Size Fits the Milwaukee M12 Band Saw? Length, Width, and TPI

You bought a Milwaukee M12 FUEL compact band saw because it is the smallest and lightest band saw Milwaukee makes. It is perfect for cutting conduit and small pipe in tight spaces. But the blade that came with it is getting dull and you cannot find replacements at the local hardware store. They carry 44-7/8 inch blades for the big saws, but nothing in 30-9/16.

The Milwaukee M12 FUEL compact band saw (2529-20) uses a 30-9/16 inch blade. This is the shortest blade length of any Milwaukee band saw, and it is unique to the M12 compact. No other Milwaukee model uses this length. The blade is also not shared with DEWALT or Makita compact saws, which use 32-7/8 or 35-3/8 inch blades.

Blade Specifications

Length: 30-9/16 inches. This is the circumference of the blade loop when installed and tensioned. The short length comes from the small wheel diameter and the compact distance between the drive wheels.

Width: 1/2 inch. Like all portable band saws, the M12 compact uses a 1/2 inch wide blade. The blade channel and guides are designed for this width exclusively.

Thickness: 0.020 inches. Standard for portable band saw blades.

Material: Bi-metal. The M42 high-speed steel edge handles metal cutting. Carbon steel blades are available but not recommended.

Available TPI Options

Milwaukee offers the 30-9/16 inch blade in two TPI options.

18 TPI (part 48-39-0515): The general-purpose blade. Handles conduit, thin-wall pipe, small round stock, and unistrut. This is the factory blade and the best starting point. The fine teeth produce clean cuts in thin material without grabbing.

24 TPI (part 48-39-0516): For very thin material. Sheet metal, small diameter rod (under 1/4 inch), and thin-wall tubing. The fine teeth prevent tearing but will burn if used on thick stock.

The M12 compact does not have enough motor torque for coarse blades (10 or 14 TPI). The saw is designed for thin material, and the 18 or 24 TPI blades match that purpose. If you need to cut thick bar stock, you need a larger saw.

Cut Capacity

The M12 compact has a cut capacity of 1-5/8 inches. This means it can cut material up to 1-5/8 inches thick. This is significantly less than the M18 compact (3-1/4 inches) or the M18 deep cut (5 inches).

The small cut capacity limits the saw to thin material. It is designed for electricians cutting conduit, plumbers cutting small pipe, and HVAC technicians cutting thin-wall ducting. It is not designed for cutting structural steel or thick bar stock.

Blade Speed

The M12 compact runs at 350 SFPM. This is a single speed with no variable speed dial. The speed is appropriate for the thin material the saw is designed to cut. For cutting different materials, you change the blade rather than the speed.

Battery Life

With a 2.0 Ah M12 battery, the saw can make approximately 50 cuts in 1/2 inch EMT conduit. With a 4.0 Ah battery, expect about 100 cuts. The M12 battery platform is shared with other M12 tools, so if you already own M12 tools, you have batteries.

For extended use, keep a spare battery charged. The saw drains batteries faster than the M18 models because the smaller battery has less capacity.

Where to Find Blades

The 30-9/16 inch blade is less common than the 44-7/8 inch blade. You will not find it at most hardware stores. Here is where to look.

Milwaukee Tool: The factory blades (48-39-0515 for 18 TPI, 48-39-0516 for 24 TPI) are available from Milwaukee’s website and authorized dealers.

Online retailers: Amazon and other online tool retailers carry the Milwaukee 30-9/16 inch blades. Search for “Milwaukee 48-39-0515” or “Milwaukee 30-9/16 band saw blade.”

Specialty tool stores: Stores that specialize in Milwaukee tools will carry the M12 blades. Big box home improvement stores may not stock them.

Third-party blades: Some third-party manufacturers make 30-9/16 inch blades, but the selection is limited. Milwaukee factory blades are the most reliable option.

M12 vs M18 Compact: Which Should You Buy?

M12 compact (2529-20):

• Cut capacity: 1-5/8 inches
• Blade: 30-9/16 inches
• Weight: 6.4 pounds
• Battery: M12 (12V)
• Best for: Electricians, plumbers, HVAC, tight spaces
• Price: 200 to 280 dollars (bare tool)

M18 compact (2829-20):

• Cut capacity: 3-1/4 inches
• Blade: 35-3/8 inches
• Weight: 10.2 pounds
• Battery: M18 (18V)
• Best for: General trades, larger material
• Price: 280 to 380 dollars (bare tool)

If you only cut conduit and small pipe, the M12 is the better choice. It is lighter, smaller, and less expensive. If you need to cut larger material (up to 3-1/4 inches), the M18 compact is more capable.

Recommended Blades

For the M12 compact, the Milwaukee 48-39-0515 18 TPI bi-metal blade is the factory standard and the best all-purpose choice. It handles most jobsite cutting in thin material well.

For very thin material (sheet metal, small rod), the Milwaukee 48-39-0516 in 24 TPI is the finer option. Keep one on hand for when the 18 TPI is too coarse.

One limitation: because the 30-9/16 inch length is unique to the M12, you cannot use blades from other Milwaukee saws or from DEWALT. You must buy M12-specific blades. This limits your options and can make blades harder to find in a pinch.

FAQ

What blade does the Milwaukee M12 band saw use?

A 30-9/16 inch blade in 1/2 inch width and 0.020 inch thickness. The factory blade is 18 TPI bi-metal.

Will M18 blades fit the M12 band saw?

No. The M12 uses a 30-9/16 inch blade. The M18 compact uses 35-3/8 inches. The M18 deep cut uses 44-7/8 inches. None are interchangeable.

What TPI should I use for cutting conduit?

18 TPI is the best choice for conduit and EMT. The fine teeth produce clean cuts without grabbing in thin-wall material.

Where can I buy M12 band saw blades?

Milwaukee’s website, authorized Milwaukee dealers, and online retailers. Big box stores may not stock the 30-9/16 inch length. Search for part number 48-39-0515 (18 TPI) or 48-39-0516 (24 TPI).

How many cuts per charge can I expect?

With a 2.0 Ah M12 battery, about 50 cuts in 1/2 inch EMT. With a 4.0 Ah battery, about 100 cuts.

Can the M12 band saw cut thick steel?

No. The cut capacity is 1-5/8 inches, and the motor does not have enough torque for thick solid bar. The M12 is designed for thin material. For thick stock, use the M18 deep cut.

References

• Milwaukee Tool. “M12 FUEL Compact Band Saw Owner’s Manual.” Model 2529-20.
• Milwaukee Tool. “Portable Band Saw Blade Specifications.” Milwaukee Tool Product Catalog.
• Milwaukee Tool. “M12 Battery Platform Overview.” Milwaukee Tool Technical Documentation.
• Platt Electric Supply. “Milwaukee M12 Band Saw Blade Reference.” Platt Electric.
• Ohio Power Tool. “Milwaukee M12 Compact Band Saw Parts Guide.” Ohio Power Tool.