The Malco TS1 TurboShear transforms any standard drill into a precision sheet metal cutter that handles 20-gauge galvanized steel with measurable speed and accuracy advantages over traditional snips. This attachment delivers contractor-grade cutting capacity without requiring a dedicated power shear.
The tool excels where aviation snips struggle — long straight cuts, tight curves, and repetitive panel work. Contractors working with sheet metal, HVAC installers, and metal roofing professionals get professional cutting performance using drills they already own.
Cutting Capacity and Power Requirements
The TS1 cuts through 20 gauge galvanized steel (1.02 mm / 0.040 in), 18 gauge mild steel (0.048 in), 20 gauge cold-rolled steel (0.91 mm / 0.036 in), 24 gauge stainless steel (0.63 mm) non-hardened, 16 gauge aluminum (1.2 mm), and copper up to 0.050 in (1.27 mm).
| Material | Maximum Thickness |
|---|---|
| Galvanized Steel | 20 gauge (1.02 mm / 0.040 in) |
| Mild Steel | 18 gauge (0.048 in) |
| Cold-Rolled Steel | 20 gauge (0.91 mm / 0.036 in) |
| Stainless Steel (non-hardened) | 24 gauge (0.63 mm) |
| Aluminum | 16 gauge (1.2 mm) |
| Copper | 0.050 in (1.27 mm) |
Power requirements are straightforward: minimum 14.4V DC cordless drill or 7A AC corded drill, 1200 RPM minimum speed, and fits 1/4 inch or larger chucks. Most contractor-grade drills exceed these specs. The universal 1/4 inch drive attachment means compatibility with DeWalt, Milwaukee, Makita — whatever’s in the truck.
Setup takes seconds. Insert the drive shank into the chuck, adjust jaw clearance for material thickness using the 3/16 inch set screw on the back (turn clockwise for thinner materials, counter-clockwise for thicker), and start cutting.
Real-World Performance
The offset design protects hands from the work surface while navigating tight curved patterns and square cuts. This matters when cutting HVAC ductwork in cramped mechanical rooms or trimming metal roofing at awkward angles.
Blind-hole start capability requires only a 1/2 inch starter hole — drill the pilot hole, insert the shear, and cut interior openings without edge access. The replaceable hardened jaws handle thousands of feet of cutting before needing replacement.
Applications span HVAC ductwork and furnace jackets, auto body panels, metal roofing and building panels, vinyl siding, steel mesh, and equipment enclosures. Various sources indicate 12-inch sections cut in 6-10 seconds — significantly faster than hand snips on repetitive cuts.
DeWalt’s competing model cuts through seams (spiral/snap lock) more easily, but the Malco TS1 is often noted for being easier to use in tight spaces and navigating curves. For Montana’s pole barn and metal building market, the TS1’s curve-cutting ability matters more than seam penetration.
Professional reviews consistently rate the TS1 between 4.6 and 4.9 out of 5 stars across Grainger, SupplyHouse, Home Depot, and Lowe’s. Key sentiments include: cuts through sheet metal ‘like butter’, saves hands from fatigue compared to manual snips, fast and precise for long cuts, and reliable high quality Made in USA construction.
The optional TSDC Drill Clamp (sold separately) enables one-handed operation and adds stability — worth considering for production cutting or overhead work.
Bottom Line
The TS1 earns its keep on any jobsite where sheet metal needs cutting. Twenty-gauge capacity covers most HVAC, roofing, and general construction needs. The tool pays for itself on the first job requiring 50+ feet of cutting — your hands stay functional, cuts stay straight, and the job gets done faster.
For Montana contractors dealing with metal roofing, pole barn siding, or HVAC installation, this attachment turns downtime into productive cutting time. Keep it in the truck. When metal needs cutting, grab any decent drill and get to work.
FAQ
What drill specs does the TS1 require?
Minimum 14.4V DC cordless or 7A AC corded drill with 1200 RPM minimum speed. The tool fits any 1/4 inch or larger chuck. Most professional-grade drills exceed these requirements.
Can it cut stainless steel?
Yes, up to 24 gauge (0.63 mm) non-hardened stainless steel. Hardened stainless exceeds the tool’s design limits.
How thick can it cut aluminum?
The TS1 handles aluminum up to 16 gauge (1.2 mm) — thicker than the steel capacity due to aluminum’s softer properties.
Does it require a starter hole for interior cuts?
Yes, blind cuts require a 1/2 inch starter hole. Drill the pilot hole first, then insert the shear to complete the cut.
What comes with the TS1?
The package includes the Malco TS1 TurboShear tool and instruction sheet. Optional accessories include the TSDC Drill Clamp for one-handed operation and TS1B replacement blades.
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