The Bormax³ HM Prima is a premium Forstner bit featuring carbide-tipped main cutters and pre-cutters mounted on an alloyed steel core. Its replaceable centring tip and Ø 4 mm pilot drill deliver wobble-free starts, even at angles. The robust 10 mm hex shank ensures secure torque transfer in handheld and stationary drills.

📐 Available Sets in Wooden Box.

• 4-pc: Ø 35, 40, 45, 50 mm
• 5-pc : Ø 15, 20, 25, 30, 35 mm
• 6-pc Set 1: Ø 15, 20, 25, 30, 35 mm. Includes 125mm drill extension.
• 6-pc Set 2: Ø 15, 20, 25, 30, 35, 40 mm
• 8-pc: Ø 15, 20, 25, 30, 35, 40, 45, 50 mm
• 9-pc: Ø 15, 20, 25, 30, 35, 40, 45, 50 mm. Includes 250mm drill extension.

✨ Key Features

• Replaceable Centring Tip & Pilot Drill – Fast, precise hole starts in any material or angle

• Carbide-Tipped Cutters – Two main HM blades and two pre-cutters for tear-free, low-friction drilling

• 10 mm Hex Shank – Slip-free grip and maximum power transfer

• Efficient Chip Evacuation – Optimised flute geometry for clean cutting and minimal clogging

• Low Heat Build-Up – Carbide edges and serrated rim reduce friction for longer life

• Deep-Hole Ready – Use with FAMAG F1639 extensions for depths beyond 57 mm

⚙️ Technical Specifications

(Example for Ø 25 mm bit)

• Drill Diameter (AØ): 15 – 50 mm

• Pilot Drill (HØ): 10 mm (15–25 mm bits), 12 mm (30–35 mm), 14 mm (40 mm), 16 mm (45 mm), 18 mm (50 mm)

• Cutting Depth (NL): 57 mm

• Overall Length (GL): 90 mm

• Shank Diameter (SØ): 10 mm hexagon

• Material: Carbide-tipped HSS on alloyed steel core

🪵 Applications

• Precision hinge-cup boring and concealed hardware holes

• Countersinking and through-holes in solid wood, MDF & chipboard

• Drilling in acrylic, Plexiglas®, Corian®, GFRP, HPL, polycarbonate, PVC & Trespa®

• Angled and deep-hole drilling with extensions for staircase components and end-grain work

💡 Why Choose Bormax³ HM Prima?

With its carbide-tipped geometry, replaceable pilots and robust hex shank, the Bormax³ HM Prima delivers exceptional precision, tear-free cuts and extended tool life across wood and composite materials—ideal for craftsmen demanding the best.