The Malco HD Turbo Shear TSHD transforms any standard drill into a precision metal cutting powerhouse, handling up to 18-gauge mild steel with its 360° rotating head design. At 18-gauge mild steel capacity (0.048”), 20-gauge spiral duct (0.040”), 14-gauge aluminum (0.060”), and 0.100” copper capability, this heavy-duty attachment outperforms the standard TurboShear model while maintaining the versatility contractors need for Montana’s metal roofing and HVAC work.
Cutting Capacity and Performance Specs
The TSHD earns its “Heavy-Duty” designation through genuine capacity improvements over the standard model. The TSHD (Heavy-Duty) model increases cutting capacity to 18-gauge mild steel, compared to the 20-gauge capacity of the standard TurboShear.
| Material | Gauge | Thickness | Source |
|---|---|---|---|
| Mild Steel | 18 ga | 0.048” (1.22 mm) | manufacturer |
| Galvanized Steel | 18 ga | 0.052” (1.32 mm) | manufacturer |
| Spiral Duct | 20 ga | 0.040” (1.02 mm) | manufacturer |
| Non-hardened Stainless | 20 ga | 0.032” (0.81 mm) | manufacturer |
| Aluminum | 14 ga | 0.060” (1.52 mm) | manufacturer |
| Copper | - | 0.100” (2.55 mm) | manufacturer |
Performance metrics back up the capacity claims. The tool offers quick, precise straight, curved, and notched cuts, usually within 6–10 seconds for a 12-inch section. The tool operates best at 1,500–2,500 RPM. That’s production-level speed for field modifications, especially when working overhead or in confined spaces.
The blade system uses heavy-duty hardened carbon steel (replaceable) construction. The shear blades have four-sided inserts that can be rotated to extend lifespan, rated for approximately 1,200 feet of cutting in 16-gauge steel. Four cutting edges per blade means contractors get 4,800 feet of cuts before replacement — that’s serious longevity.
360° Rotating Head and Universal Drill Compatibility
The rotating head sets this tool apart from fixed-position shears. 360° rotatable shear head for optimal clearance and positioning means cutting along ceiling joists, around ductwork, or inside electrical panels without contorting your wrist or repositioning constantly. They include a helical foot for smooth directional cuts and a 5-position head for versatile access.
Drill compatibility covers the entire jobsite arsenal:
| Requirement | Specification |
|---|---|
| Minimum Chuck Size | 1/4 in (6.35 mm) |
| Cordless Power | Minimum 14.4 V DC |
| Corded Power | Up to 7 A AC |
The patented telescoping drill-clamp (Patent #9,649,702) for universal fit adapts to virtually any drill body shape. Extend the telescoping clamp and slide it over the drill’s motor housing. Tighten the clamp screw to secure the shear to the drill body. Compatible with impact drivers and standard cordless/corded drills — meaning that 18V impact driver collecting dust suddenly becomes a metal cutting machine.
Real-World Applications and User Feedback
Montana contractors face three primary metal cutting scenarios where the TSHD excels:
HVAC ductwork installation including straight and spiral duct — critical for Montana’s extreme temperature swings requiring robust ventilation systems. Metal roofing systems: standing-seam, mechanical-lock, and corrugated panels — the standard for snow-shedding performance. Auto-body panel trimming and fabrication — essential for rust repair from road salt exposure.
User feedback confirms field performance. 4.8 to 5.0 out of 5 stars across approximately 40 reviews across major seller platforms. Contractors praise extremely fast and clean cuts in sheet metal and high maneuverability due to the rotating head.
The main limitation? Challenging to navigate over high ribbing on diagonal cuts. Standing-seam roofing with tall ribs requires planning your cut path. Some users report initial setup/clamping can be tricky for some drill body shapes, though the included spacers solve most fitment issues.
Frequently Asked Questions
Q: What’s the actual difference between the standard TurboShear and this HD model?
A: The TSHD (Heavy-Duty) model increases cutting capacity to 18-gauge mild steel, compared to the 20-gauge capacity of the standard TurboShear. That’s the difference between cutting HVAC ductwork (20 ga) and heavier structural components (18 ga).
Q: Will this work with my impact driver or just drills?
A: Compatible with impact drivers and standard cordless/corded drills. The tool requires minimum 14.4 V DC for cordless tools or up to 7 A AC for corded models.
Q: How do you adjust the blade for different material thicknesses?
A: Adjust blade clearance via the 3/16” set-screw (clockwise for thinner metals, counter-clockwise for thicker). The 3/16 inch lateral blade-adjustment set-screw provides precise control for optimal cutting performance.
Q: What’s the expected blade life?
A: The shear blades have four-sided inserts that can be rotated to extend lifespan, rated for approximately 1,200 feet of cutting in 16-gauge steel. With four usable edges, that’s 4,800 feet total before replacement.
Q: Does the rotating head lock in position or spin freely during use?
A: Loosen the collar to rotate the shear head to the desired angle, then retighten. The head locks securely in your chosen position — it won’t spin during cuts.
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