Finger Jointer: Seamless End-Grain Bonding for Superior Panel Glue-Ups

What is a Finger Jointer?

A finger jointer (or finger joint cutter) machines interlocking “fingers” into wood ends, enabling strong end-grain glue joints for panel extension, furniture parts, and laminated beams.

Types of Finger Joint Systems

1. Stationary Finger Jointers
   • Dedicated machines for high-precision joints.
2. Router-Based Jointers
   • Uses router bits with finger-joint templates.
3. CNC Finger Jointers
   • Programmable for custom finger profiles.
4. Inline Jointers
   • Integrated with planers for continuous processing.

Key Advantages

• Strength: Increases glue surface area by 300%.
• Zero Waste: Repurposes short wood scraps.
• Aesthetic: Creates decorative patterns in visible joints.
• Speed: Joints 20–50 boards/hour.

Applications

• Furniture: Tabletops, chair rails.
• Construction: Glulam beams, door cores.
• Millwork: Moldings, skirting boards.

Operation Workflow

1. Board Alignment: Clamp ends together in jointer jig.
2. Cutting: Pass through cutterhead (1,000–4,000 RPM).
3. Gluing: Apply PVA adhesive to fingers.
4. Clamping: Press joints at 10–15 psi for 30 minutes.

Technical Innovations

• Micro-Finger Tech: 0.5mm fingers for invisible joints.
• UV-Curing Adhesives: Bond in 60 seconds.