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Simply Brilliant — the Double Dovetail Key joining system from Germany
Hoffmann GmbH Maschinenbau has been developing the Double Dovetail Key joining system in Bruchsal, Germany, for over 30 years. The Hoffmann system uses precision-machined dovetail keys and dedicated slot milling machines to create strong, self-clamping joints in wood, plastic and aluminium — used worldwide in picture framing, joinery and furniture production. Ernst P AB is the Swedish distributor.
Hoffmann has refined the Double Dovetail Key system for over three decades — proven in thousands of workshops worldwide.
Ernst P AB is the official Swedish distributor for Hoffmann machines and dovetail keys — full support and service.
The Hoffmann Double Dovetail Key creates strong, self-clamping joints without clamps — simply mill the slots, insert the key and the joint pulls tight.
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Ernst P AB is the official Swedish distributor for Hoffmann GmbH Maschinenbau and the Double Dovetail Key joining system. Hoffmann has been based in Bruchsal, Germany, for over 30 years and has developed a unique wood joining system based on precision-machined dovetail keys that create strong, self-clamping joints without clamps or long pressing times.
The Hoffmann system works by milling matching dovetail-shaped slots in the two workpieces, then pressing in a double dovetail key. The tapered dovetail profile pulls the joint tight as the key is driven home — creating a strong mechanical connection reinforced with adhesive. The result is a joint that is faster to produce, more consistent and often stronger than traditional methods.
Hoffmann machines and keys are used worldwide in picture framing, window and door manufacturing, furniture production and general joinery. Ernst P AB offers the complete Hoffmann range — slot milling machines, double mitre saws, drilling systems and dovetail keys in all sizes. Free shipping on orders over SEK 2,000 in Sweden.
The Hoffmann MU-2 slot milling machine is the most popular model for small to medium joineries and picture framers. It cuts precise dovetail slots in seconds and is simple to set up and operate. For higher production volumes, the Hoffmann PP-2 pneumatic press and the MU-3 with automated feeding deliver faster cycle times.
Hoffmann dovetail keys are available in hardwood and plastic, in sizes from W-0 (smallest) to W-4 (largest). The choice of key size depends on the cross-section of the workpiece and the required joint strength. Hoffmann's motto — 'Simply Brilliant – Brilliantly Simple' — sums up the elegance of the system.
As the Swedish distributor, Ernst P AB provides full machine demonstrations, technical support and after-sales service for all Hoffmann products. Contact us on 031-703 07 70 or [email protected] to arrange a demonstration or discuss your joining requirements.
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