The Festool 577040 Guide Rail Angle Stop FS-WA is an angle stop accessory for Festool FS/2 guide rails. This is a guide rail angle stop designed for precise angled panel cutting and repeatable track saw setup. Model Number 577040. If you are cutting sheet goods, cabinet parts, or trim pieces and want cleaner setup for repeat angles, this accessory is built to make that process faster and more consistent.

The big reason this accessory matters is the angle range. It lets you set cuts from -60° to +60°, which covers the kind of angled breakdown work that usually turns into layout guesswork on a jobsite or in the shop. Festool also calls out repeatable accuracy and indexed locking positions for common settings, so you are not just getting an adjustable fence. You are getting a more reliable way to hit the same angle again on the next piece.

Setup is straightforward. The FS-WA uses a quick-clamping lever to attach to the guide rail without tools, and the design is described as self-aligning. That matters because accessories like this only earn their keep if they go on fast and stay easy to use. Festool also notes that the controls can be operated from above, so you are not reaching underneath the rail or fighting awkward adjustments while holding a panel in place.

In day-to-day use, the details are what separate a useful rail accessory from one that stays in the truck. This one has a long contact edge and a viewing window to help align to the workpiece edge. Festool also includes an additional positioning bolt for more secure support, including on material with rounded edges. That gives the setup a more planted feel when you are working with panels that are not perfectly square or when you need a cleaner reference point at the edge.

System fit is clear. The FS-WA is suitable for Festool FS/2 guide rails, and it can be extended with the Festool FS-WA-VL guide extension sold separately. That optional extension adds a scale and adjustable stop for repeat cuts to size, which is a smart upgrade if you are processing multiple parts at the same dimension and angle. In other words, this can start as a precise angle guide and grow into a more production-friendly setup.

Who should buy it? Woodworkers, cabinet installers, finish carpenters, and remodelers who already work on the Festool guide rail platform will get the most out of it. If you own FS/2 rails and use a track saw for breaking down panels or making accurate angled cuts, the FS-WA gives you a faster, more controlled workflow than laying out every angle manually. If you do not run the Festool rail system, this is not the accessory to force into your setup. But if you do, it fills a real gap between freehand layout and shop-machine style repeatability.

Festool 577040 Guide Rail Angle Stop FS-WA is the right add-on if your rail system needs real angle capability

This is a smart upgrade for FS/2 users who want cleaner, faster angled cuts without turning every setup into a measuring project.

• Who it's for: Festool rail and track saw users doing cabinet parts, trim, panel work, and repeat angled cuts.
• Why it stands out: Wide -60° to +60° range, tool-free mounting, and indexed settings make it more useful than a basic fixed square.
• Worth knowing: This is an accessory, not a standalone cutting system, and the FS-WA-VL extension is sold separately if you want repeat cuts to size.

• What guide rails does this fit? The FS-WA is listed as suitable for Festool FS/2 guide rails.
• What angle range can it set? It is designed for cuts from -60° to +60°.
• Can it be expanded for repeat cuts to length? Yes. It can be extended with the Festool FS-WA-VL guide extension.
• Does it require tools to attach to the rail? No. Festool specifies a quick-clamping lever for tool-free attachment.