DOMINO SIPO 8X50-300 (3X100) MAU

Festool DOMINO Sipo D 8×50/300 MAU Loose Tenons

At a Glance:300 weatherproof Sipo hardwood DOMINO loose tenons measuring 8 × 50mm for strong, twist-resistant indoor and outdoor joinery.

The Festool DOMINO Sipo D 8×50/300 MAU loose tenons are premium joining elements designed for strong and accurately aligned joints in solid timber and suitable panel materials. Manufactured from durable Sipo hardwood, they are naturally resistant to insects, mould and weather exposure, making them particularly well suited to outdoor furniture, exterior joinery and other demanding applications.

The distinctive DOMINO profile combines the alignment advantages of a flat biscuit with the strength of multiple conventional round dowels. Its elongated shape locks the workpieces against rotation from the very first tenon, while the broad contact surfaces provide excellent mechanical stability and a generous area for adhesive bonding.

Specially formed glue pockets and longitudinal grooves help distribute adhesive evenly throughout the joint. They also allow excess glue to escape as the tenon is inserted, helping the components seat fully and creating a secure, dependable connection. Projecting guide ribs centre the DOMINO inside the routed mortise for precise workpiece alignment and clean, flush assembly.

Weatherproof DOMINO strength for demanding joinery

Sipo DOMINOs are developed specifically for applications where ordinary interior-grade beech tenons may not provide sufficient resistance to moisture, insects and fungal attack. Combined with Festool’s precise DOMINO mortising system, they create fast, stable and rotation-proof joints for furniture, shopfitting and exterior timber projects.

Product Highlights

• Weatherproof Sipo hardwood: Naturally resistant to insects and mould and ideally suited to outdoor applications.
• Exceptional joint stability: The cross-section provides strength comparable to three round dowels of the same drilling diameter.
• 100% rotation resistant: The unique DOMINO shape locks the joint against twisting from the first tenon.
• Perfect workpiece alignment: Projecting guide ribs centre the tenon inside the DOMINO mortise.
• Optimised glue distribution: Special glue pockets and longitudinal grooves spread adhesive evenly through the joint.
• Cleaner assembly: Side grooves allow excess adhesive to escape so the tenon can seat correctly.
• Quick size identification: The dimensions are imprinted directly on each DOMINO.
• Responsible material sourcing: Manufactured from FSC™-certified timber.