Festool Df 500 RQ-Set Review

Ask any professional furniture maker to name the one power tool that transformed their workflow more than any other over the past two decades, and you will hear the same answer far more often than not. Loose-tenon joinery — cutting identical mortises into both halves of a joint and bridging them with a solid wood tenon — delivers the structural integrity of a traditional mortise and tenon in a fraction of the time, with no layout gymnastics and no hand-fitting. The technique itself is not new; what changed everything was the arrival of handheld oscillating joiners that could cut a clean, flat-bottomed rectangular slot in a single smooth plunge. Suddenly, joints that once took 20 minutes of machine setup and careful chisel work were done in under 10 seconds — and they were stronger and more accurate than most hand-cut equivalents. For the cabinetmaker running a commercial shop, the furniture designer producing one-off commissions, or the advanced hobbyist whose weekend projects demand professional results, a precision loose-tenon joiner is not simply a luxury upgrade from a biscuit joiner — it is an entirely different class of tool that opens up joinery possibilities biscuits cannot touch, from structural chair frames to mitred cabinet doors to bed frames that will still be solid decades from now.

The Festool Domino DF 500 occupies a unique position in the power tool market: it is both the category-defining original and, more than 15 years after its introduction, still the benchmark against which every loose-tenon joiner is measured. The RQ-Set variant bundles the DF 500 Q-Plus machine with four of the most commonly used Domino cutters — 4 mm, 5 mm, 6 mm, and 8 mm — covering the full range from delicate drawer-box joinery to substantial chair-rail connections. This is the configuration that many professional shops run day in and day out, and having all four cutters in the Systainer from day one means you avoid the frustration of starting a project only to discover you need a cutter size that was sold separately. The 420-watt motor spins the patented oscillating cutter at up to 25,500 revolutions per minute, slicing clean rectangular mortises from 12 to 28 mm deep with a single controlled plunge.

In this review we examine the Festool DF 500 RQ-Set — what you get in the box with the four included cutters, how the Domino system performs across common joinery tasks from cabinet face frames to compound-angle chair joints, and whether the substantial investment of around €1,370 is justified for your workshop. We also compare the RQ-Set configuration against buying the machine and cutters separately, so you can see exactly what value this bundle delivers.

The Festool DF 500 RQ-Set centres on the Q-Plus generation of the Domino joiner, driven by a 420-watt motor that produces up to 25,500 oscillations per minute at the cutter. Rather than rotating like a router bit, the cutter moves side to side at high frequency while plunging forward, carving out a flat-bottomed rectangular mortise that precisely matches the cross-section of Festool's solid beech Domino tenons. The machine accepts five cutter diameters in total — 4, 5, 6, 8, and 10 mm — and the RQ-Set ships with four of them: the 4 mm for thin stock and small drawer boxes, the 5 mm for general cabinet joinery, the 6 mm for face frames and mid-weight furniture, and the 8 mm for chair rails, table legs, and heavier structural connections. The depth of cut is set via a stepped turret with detents at 12, 15, 20, 25, and 28 mm, covering the complete range of standard Domino tenon lengths. A 4-metre power cable gives you generous reach around the assembly table without needing an extension lead — a small but meaningful quality-of-life detail on busy job sites.

The fence system is the DF 500's true engineering centrepiece. The main reference fence tilts continuously from 0 to 90 degrees with positive stops laser-engraved at 0°, 22.5°, 45°, 67.5°, and 90°, making mitred and compound-angle joinery fast and repeatable. The height of the cutter centre relative to the fence face adjusts from 5 to 30 mm, which means you can centre mortises on stock from 10 mm plywood up to 60 mm solid timber — virtually every material thickness a furniture maker encounters. A flip-down support bracket extends the registration surface for narrow edges, so even a 16 mm panel edge gives you a stable reference for the fence. The mortise width selector offers three settings: a tight setting that matches the tenon width exactly for the first joint in a series, and two progressively wider settings that give you a millimetre or so of lateral float for subsequent joints, making multi-joint glue-ups dramatically easier to align without compromising final strength. The integrated pin stops let you index off the centre of the previous mortise for perfectly spaced repeat cuts — no pencil marks, no tape measure, just register, plunge, and advance.

In daily operation, the DF 500 rewards good technique with consistently flawless results. The vertical handle positions your plunging hand directly above the cutter axis, so the force you apply drives the cutter straight into the workpiece rather than creating a rocking moment that would tilt the tool off-square. The front auxiliary handle — a knurled metal post — gives your off-hand a secure anchor point for pressing the base plate firmly against the reference edge. The trigger locks on for continuous use during production runs, and the spring-loaded plunge mechanism returns the cutter to its home position the instant you release pressure, so the spinning cutter never lingers in the mortise. With a 27 mm dust extraction port connected to a shop vacuum or Festool CT extractor, the Domino cuts cleanly with virtually no chip debris left in the mortise — an important practical point because chips packed into the bottom of a mortise prevent the tenon from seating fully and can create glue-starved joints. The clear plastic viewing window on the front of the body lets you see the cutter entering the workpiece, which helps when you are plunging into a precise pencil line on a visible joint.

What sets the RQ-Set apart from the standard DF 500 package is the inclusion of four cutter sizes right out of the Systainer. Buying these cutters individually would add roughly €150–200 to the purchase price, so the RQ-Set represents genuine savings for anyone who intends to use the Domino across a range of joinery scales — which is to say, virtually everyone who buys one. The D4 cutter handles the smallest Domino tenons (4 × 20 mm), perfect for narrow drawer dividers, thin face-frame stiles, and delicate trim joinery where a larger tenon would weaken the surrounding stock. The D5 (5 mm) covers general-purpose cabinet joinery — think 18 mm plywood carcase corners and shelf pins. The D6 (6 mm) is the workhorse size for face-frame joinery and mid-weight furniture construction, offering a substantial glue surface without eating into the stock width. The D8 (8 mm) steps up to handle chair rails, table aprons, and structural framing members where joint strength is the primary concern. The only cutter not included is the largest D10 (10 mm), which is used for the heaviest structural work — and many owners never need it, making the RQ-Set's four-cutter selection the sweet spot for perhaps 90 per cent of furniture-making applications.

The entire kit ships in a Festool Systainer SYS 2 T-LOC — the interlocking modular case system that has become as much a part of the Festool identity as the tools themselves. The Systainer's custom foam insert has precision-cut cavities for the DF 500 body, each of the four cutters, the angular stop, the service key, and spare tenons. The T-LOC latch system lets you stack multiple Systainers securely, open any case in the stack without unstacking, and lock the entire column to a Festool CT vacuum for a single-roll mobile workstation. The machine itself weighs 3.6 kg and measures approximately 340 × 200 × 160 mm, compact enough for one-handed positioning yet massy enough to sit dead still during the plunge. Power comes from a standard 230-volt mains lead, 4 metres long. Rated 5.0 out of 5 stars from a single review on Amazon.fr — a small sample but consistent with the broader Domino reputation across thousands of reviews on other platforms. At roughly €1,371, this is a serious investment, but it is also a tool that holds its value exceptionally well on the second-hand market and remains the standard against which every loose-tenon joiner launched since 2007 has been judged.

The Festool DF 500 RQ-Set is the ideal entry point for professional cabinetmakers and furniture builders who want the complete Domino system with the four most-used cutter sizes included from day one — saving money versus buying cutters separately and enabling immediate work across the full range of common joinery scales from drawer boxes to chair frames.