Milwaukee Deep Cut Band Saw: What to Check Before Buying or Restoring One

You are a fabricator or mechanic who cuts thick pipe, solid bar, and structural steel. You need a portable band saw that can handle material up to 5 inches thick. You have been looking at the Milwaukee M18 FUEL Deep Cut Band Saw because it has the largest cut capacity of any portable band saw. Before you buy, you want to know what to check and whether it is the right tool for your work.

The Milwaukee M18 FUEL Deep Cut Band Saw is the most capable portable band saw on the market. With a 5-inch cut capacity, it can handle material that no other portable saw can. It is designed for fabricators, mechanics, plumbers, and HVAC technicians who need to cut large pipe, thick bar stock, and structural steel in the field.

If you are considering buying one, the Milwaukee 2729-20 M18 FUEL Deep Cut Band Saw (tool only) is the standard model. The newer Milwaukee 2929-20 has improved ergonomics. If you need batteries and a charger, the Milwaukee 2929-22 kit includes everything.

Specifications

Specification	Value
Model	2729-20 (current), 2929-20 (newer)
Cut capacity	5 inches
Blade length	44-7/8 inches
Blade width	1/2 inch
Blade thickness	0.020 inches
Motor	Brushless (POWERSTATE)
Speed	200 to 550 SFPM (variable speed on 2929-20)
Weight	14.7 pounds (bare tool)
Battery	M18 (5.0 Ah recommended)
Length	16.75 inches

What the Deep Cut Does Well

Cutting large pipe. The 5-inch capacity handles pipe up to 5 inches in diameter, including 4-inch schedule 40 steel pipe, 4-inch cast iron soil pipe, and 5-inch stainless pipe.

Cutting thick solid bar. The deep cut can handle solid bar stock up to 2 inches thick in steel and 3 inches in aluminum. The brushless motor has the torque for thick material.

Cutting structural steel. Angle iron, channel, and I-beams up to 5 inches wide. The deep cut handles material that compact saws cannot.

Cutting unistrut. Standard and deep unistrut up to 2-1/2 inches. The deep cut handles all unistrut sizes with ease.

Field cutting. At 14.7 pounds, the deep cut is heavy for a portable saw, but it is still portable. It can go where a stationary saw cannot.

What the Deep Cut Does Poorly

Tight spaces. At 16.75 inches long and 14.7 pounds, the deep cut is too large for tight spaces. If you work in ceiling cavities or wall cavities, the compact saw is better.

One-handed operation. At 14.7 pounds, the deep cut is too heavy for comfortable one-handed use. Most users need two hands or a resting surface.

Thin material. The deep cut can cut thin material, but the coarse blades (10 TPI) are designed for thick stock. For thin material, you need an 18 TPI blade, which is available but less common.

Precision cutting. The deep cut is designed for rough field cutting, not precision cutting. For precision work, a stationary saw is better.

Blade Selection

The deep cut uses a 44-7/8 inch blade. This is a common blade length available from Milwaukee, DEWALT, LENOX, MK Morse, and Starrett.

Available TPI:

• 10 TPI (part 48-39-0502): General purpose. Thick pipe, solid bar, unistrut, structural steel. The factory blade and the best starting point.
• 14 TPI (part 48-39-0503): Medium thickness. Smoother cuts on 1/8 to 1 inch material.
• 18 TPI (part 48-39-0504): Thin material. Thin-wall tubing, conduit, sheet metal.
• 10/14 variable pitch (LENOX WB44-10/14): Mixed thicknesses. Reduces vibration.

Blade material: Bi-metal M42 standard. Bi-metal M51 for stainless steel. Carbide-tipped for production cutting.

Blade life: In thick wall pipe, expect 50 to 100 cuts per blade. In solid bar, expect 50 to 100 cuts. In thin-wall tubing, expect 100 to 200 cuts.

For general-purpose cutting, the Milwaukee 48-39-0502 in 10 TPI is the standard choice. For longer life, the LENOX Wolf-Band in 10/14 variable pitch is worth the extra cost.

Battery Life

M18 5.0 Ah battery (recommended): About 40 to 60 cuts per charge in 2-inch solid bar. The recommended battery for deep cut work.

M18 8.0 Ah battery: About 70 to 100 cuts per charge in 2-inch solid bar. The longest run time. Also the heaviest battery.

M18 3.0 Ah battery: About 20 to 30 cuts per charge. Too small for regular deep cut work. Only use if you have no other option.

M18 6.0 Ah battery: About 50 to 75 cuts per charge. A good balance of run time and weight.

For most users, the 5.0 Ah battery is the best balance of run time and weight. The 8.0 Ah is worth it for production work.

What to Check When Buying Used

Motor. Plug in a battery and start the saw. Listen for smooth, consistent running. No grinding, clicking, or popping sounds. Let it run for 30 seconds. If it gets hot or smells like burning electrical insulation, the motor is failing.

Blade and guides. Check the blade condition. If missing or broken, factor in 15 to 25 dollars for a new blade. Check the blade guides for wear. The guides should be smooth and not grooved.

Shoe. Check the shoe for wear. A worn shoe will not produce square cuts. Look for deep gouges or uneven wear.

Frame. Check for cracks, especially around the handle and the C-frame opening. A cracked frame means the saw was dropped and may not be safe.

Switch. The trigger should engage smoothly and release cleanly. If it sticks, the switch may need replacement.

LED light. The deep cut has an LED light that illuminates the cut zone. Check that it works.

Variable speed (2929-20 only). If the saw has variable speed, test the speed control through its full range. If it does not respond, the speed control may be failing.

Battery compatibility. The saw runs on any M18 battery. If you already own M18 batteries and a charger, you only need the bare tool.

New vs Used Pricing

New M18 FUEL Deep Cut (2729-20):

• Bare tool: 280 to 350 dollars
• Kit with 5.0 Ah battery and charger: 400 to 500 dollars

New M18 FUEL Deep Cut (2929-20):

• Bare tool: 300 to 380 dollars
• Kit with batteries and charger: 450 to 550 dollars

Used Pricing:

• Bare tool, good condition: 150 to 220 dollars
• Bare tool, fair condition: 100 to 150 dollars
• With battery and charger: 200 to 300 dollars

If the used price is more than 60 percent of the new price, buy new. The warranty and known condition are worth the extra cost.

Common Repairs

Blade Guide Wear

The roller bearing guides can develop play after extended use. Symptoms include blade wandering and poor cut quality. Replace the guide bearings. Milwaukee sells replacement guide kits for 30 to 50 dollars.

Switch Failure

The trigger switch can fail after years of use. Symptoms include intermittent operation or the saw not starting. Replace the switch. Cost is 15 to 25 dollars. Takes about 15 minutes.

Motor Failure

The brushless motor is generally reliable but can fail after heavy use. Symptoms include no power, intermittent operation, or a burning smell. The motor assembly is replaceable but expensive (100 to 180 dollars). For a used saw that cost 150 dollars, a motor replacement may not be worth it.

Shoe Wear

The shoe can wear from contact with the workpiece. A worn shoe causes angled cuts. Replace the shoe. Cost is 20 to 35 dollars.

Who Should Buy the Deep Cut

Buy it if:

• You are a fabricator, mechanic, plumber, or HVAC technician who cuts large pipe or thick bar
• You need to cut material up to 5 inches thick
• You already own M18 batteries
• You need a portable saw for field cutting of thick material

Do not buy it if:

• You only cut conduit and thin-wall tubing (buy the M18 compact instead)
• You work in tight spaces (buy the M18 compact or M12 compact)
• You need a saw for precision cutting (buy a stationary saw)
• You do not own any M18 batteries and do not plan to buy other M18 tools

2729-20 vs 2929-20: Which to Buy

2729-20 (original): Single speed (200 SFPM). Proven design. Widely available. Lower price.

2929-20 (newer): Variable speed (200 to 550 SFPM). Improved ergonomics with larger handle. Better balance. Tool-free blade change. Higher price.

Which to choose: If you cut a mix of materials and need speed control, the 2929-20 is worth the extra cost. If you only cut thick material at one speed, the 2729-20 is sufficient.

FAQ

What is the cut capacity of the Milwaukee deep cut band saw?

5 inches. It can cut pipe, bar, and structural steel up to 5 inches thick or wide.

What blade does the Milwaukee deep cut band saw use?

A 44-7/8 inch blade in 1/2 inch width and 0.020 inch thickness. Available in 10, 14, 18 TPI, and 10/14 variable pitch.

How much does the Milwaukee deep cut band saw cost?

New, the bare tool costs 280 to 380 dollars depending on the model. A kit with battery and charger costs 400 to 550 dollars.

What battery should I use with the deep cut band saw?

The 5.0 Ah battery is recommended for the best balance of run time and weight. The 8.0 Ah provides the longest run time for production work.

Is the 2929-20 worth the extra cost over the 2729-20?

If you need variable speed or want better ergonomics, yes. If you only cut thick material at one speed, the 2729-20 is sufficient.

Can the deep cut band saw cut stainless steel?

Yes, with a bi-metal M51 or carbide-tipped blade. Use slow speed and cutting fluid for best results.

References

• Milwaukee Tool. “M18 FUEL Deep Cut Band Saw Owner’s Manual.” Model 2729-20.
• Milwaukee Tool. “M18 FUEL Deep Cut Band Saw Owner’s Manual.” Model 2929-20.
• Milwaukee Tool. “Portable Band Saw Blade Specifications.” Milwaukee Tool Product Catalog.
• Pro Tool Reviews. “Milwaukee M18 Deep Cut Band Saw Review.” ProToolReviews.com.
• Tool Box Buzz. “Milwaukee M18 Deep Cut Band Saw Field Test.” ToolBoxBuzz.com.