Woodpeckers Domino DF 500 Offset Base System, Imperial is an aftermarket joiner accessory built for the Festool Domino platform. This is a joiner accessory designed for accurately centering and repeating mortise locations in sheet goods, panels, and solid wood parts. Model Number DF500-OBSI-18. If you use a Domino for cabinet parts, furniture components, or long production runs, this system gives you a larger, more stable reference surface and a faster way to hit the same mortise location over and over.

The big advantage here is repeatability. Instead of adjusting the Domino reference plate up and down and hoping you land on the same mark every time, the Woodpeckers system uses precision-milled spacers to positively set the fence plate in fixed positions. That matters when you are working with common 1/2 inch and 3/4 inch material, 23/32 inch plywood, or common 12 millimeter and 18 millimeter plywood. Pick the right spacer set, bolt it in place, and your mortise location stays consistent from the first part to the last.

This system is also built more like a fixture than a simple add-on. The attachment plate fastens to the Domino base with two screws, and the fence plate bolts to the attachment plate through stout 3/4 inch diameter stainless steel spacers. Woodpeckers also uses precision-machined 1/4 inch aircraft-grade aluminum for the attachment and fence plates. In plain terms, that gives you a rigid platform that resists fence drift during repeated cuts. If you have ever had a setup shift just enough to ruin a row of parts, you already know why that matters.

The larger footprint is another real upgrade. Compared to the stock Domino base and fence, this system gives you a platform that is over 2 inches wider and a fence that is nearly 3/4 inch longer. That extra bearing surface helps on narrow edges and awkward panel work, and the 2 inch knob gives you a more secure grip when you are pushing through a cut. It is not just about comfort. Better control usually means cleaner, more confident mortising.

For layout work, the Imperial version uses laser-engraved inch scales in 1/16 inch increments. The scale is aligned to the Domino cursor and extends 2 inches left and right on the base. The included outrigger system pushes that concept much further. Its five machined sections can be connected to extend the reference range out to 54 inches, which makes a big difference when you need evenly spaced mortises across long cabinet sides, shelves, face frames, or wide panels. The flip stops lock in place with zero lateral play, so once you set a pattern, you can keep feeding parts without chasing measurements.

Compatibility is straightforward. This system fits the Festool Domino DF 500 out of the box. It also works with the Domino XL 700 when used with the XL700 5 millimeter adapters noted by Woodpeckers. That makes it useful for shops running more than one Domino size, especially if you want the same offset-base workflow across different joiners.

Who is this for? Cabinetmakers, furniture builders, trim shops, and serious woodworking users who rely on the Domino for repeatable joinery. If you only cut a few loose-tenon mortises a year, this is probably more accessory than you need. But if your work depends on accurate spacing, centered mortises, and faster setup on multiple identical parts, the Woodpeckers Domino DF 500 Offset Base System, Imperial is the kind of upgrade that pays for itself in fewer setup errors and smoother production.

Woodpeckers Domino DF 500 Offset Base System, Imperial is a smart upgrade for serious Domino users

This is the kind of accessory that makes sense the minute your Domino work shifts from one-off joinery to repeatable production work.

• Who it's for: Cabinetmakers, furniture builders, and serious woodworkers who want centered mortises and repeatable spacing on multiple matching parts.
• Why it stands out: The fixed spacer system, rigid aluminum plates, and long outrigger setup do more than add reach. They turn the Domino into a more stable, more predictable layout and mortising system.
• Worth knowing: This is a premium accessory, not a casual add-on. If you only use your Domino once in a while, it may be more system than you need. If you batch parts, it is a real workflow upgrade.

• Does this fit the Festool Domino DF 500? Yes. The system is designed to fit the Festool Domino DF 500 out of the box.
• Can it work with the Domino XL 700? Yes, Woodpeckers states it works with the Domino XL 700 when the XL700 5 millimeter adapters are added.
• How far can the outrigger system reach? With all five sections connected, the outrigger extends to 54 inches.
• Is this the Imperial or metric version? This SKU is the Imperial version, with inch scales engraved in 1/16 inch increments.