Step drill bit c.k tools T3014 6–26 mm, total length 80 mm

Step drill c.k tools T3014 6–26 mm, total length 80 mm is a single-piece tapering drill designed for enlarging or creating holes in thin materials. The conical geometry provides a range of hole diameters from 6 mm up to 26 mm in one tool, eliminating the need to change bits during progressive enlarging. With an overall length of 80 mm, the bit balances reach and control for use with handheld drills and drill presses on sheet metal, plastics and laminates.

Advantages

The one-piece construction reduces runout and increases concentricity compared with multi-piece step bits, while the stepped flutes evacuate chips efficiently to maintain cutting action. Coverage of multiple diameters in a single tool speeds up work and reduces tool changes. The tapered profile and defined cutting steps enable controlled enlargement of holes with predictable diameter increments, improving repeatability for installation and assembly tasks.

Suitable for (tasks / use cases)

• Drilling and enlarging holes in thin sheet metal and aluminum panels
• Working with plastic sheets, acrylic and polypropylene components
• Creating holes in laminated materials and thin composite panels
• On-site installation tasks where speed and fewer tool changes are required
• Electrical, HVAC and cabling installations that require multiple hole sizes

Key specifications

• Diameter range: 6 mm to 26 mm in stepped increments
• Total length: 80 mm
• Single-piece tapering/stepped geometry for progressive drilling
• Suitable for use with handheld drills and drill presses
• Intended materials: thin sheet metal, plastics and laminates

How to use

Secure the workpiece to prevent rotation or movement and select an appropriate drill speed for the material being cut—lower speeds for metals, moderate speeds for plastics. Mount the step drill in the drill chuck ensuring firm clamping and minimal runout. Begin drilling with light pressure to locate the initial step; progress by applying steady, even pressure as the bit cuts through successive steps until the required diameter is reached. Withdraw the bit periodically to clear chips and prevent heat buildup. If drilling thicker sections or harder metals, use cutting fluid or lubrication and reduce speed to preserve tool life.

Usage recommendations

For best results, match drill speed and feed to the material: use slower speeds and lubrication for steel, moderate speeds for aluminum, and controlled speed with minimal heat for plastics to avoid melting. Always clamp the workpiece and use eye protection. Replace the bit when wear reduces cutting performance or produces excessive burrs.