Note: Only compatible with Festool 18V Ergo batteries.
Key Features
Hybrid PowerRun the sander cordless when you need freedom to move, or switch to the optional AC adapter for continuous sanding when an outlet is close by. Light and SmoothAt just 3 lb with very low vibration, this finish sander is built for longer sanding sessions without beating up your hand and wrist. Cleaner SandingUse the included dust bag or connect to a Festool dust extractor for near-dust-free sanding that keeps the work area cleaner and the finish easier to monitor.
Overview
The Festool RTSC 400 18V Brushless Hybrid Sander Set w/ Granat Abrasive Value Set Systainer is a cordless finishing sander kit built for clean surface prep, finish sanding, and detail work where control matters more than brute force. This is a cordless finish sander designed for fine sanding on wood, painted surfaces, and trim. Model RTSC 400. If you want Festool dust control, a compact form factor, and the option to work either cordless or with an optional corded adapter, this setup makes a lot of sense.
The big selling point here is the hybrid design. You can run on the included 18V 3.1Ah ERGO Bluetooth batteries for up to 30 minutes of cordless runtime, which is useful when you’re moving around cabinets, built-ins, punch-list work, or rooms that are not set up for easy cord management. When you do not need that mobility, the optional AC adapter gives you continuous power, so the tool can stay in rotation without waiting on batteries.
Festool also kept this sander easy to control. The RTSC 400 weighs just 3 lb, which is a real advantage when you’re sanding vertical surfaces, edge details, or overhead spots where a heavier tool gets old fast. The low-vibration design matters too. On finish work, a smoother-running sander helps you stay accurate and keep the pad flat instead of fighting the tool.
Dust collection is another reason people buy into this platform. You can use the included reusable dust bag for lighter work or hook the sander to a Festool dust extractor for near-dust-free sanding. That is not just about keeping the shop cleaner. It also helps you see the surface better while you work, which matters when you’re blending filler, leveling primer, or trying not to miss swirl marks before finish goes on.
For trim, painted millwork, doors, panels, and surface prep between coats, the rectangular sanding format is practical because it gets into corners and along edges more naturally than a round random orbit sander. Festool also includes an edge protector that snaps on to help prevent accidental contact with adjacent finished surfaces. That is the kind of feature you appreciate when you’re working close to face frames, moldings, or already-finished parts.
This set is also clearly aimed at users already working in the Festool system. It is only compatible with Festool 18V ERGO batteries, and this kit includes two of them plus the TCL 6 charger. You also get a Sys3 Systainer for storage and transport, along with a Granat 80 x 133 abrasive value set Systainer shown with the bundle. For cabinet installers, painters, remodelers, finish carpenters, and serious woodworkers, that means a cleaner, more organized sanding setup from day one.
If your work is mostly rough stock removal, this is probably not the sander you reach for first. But if your priority is finish quality, dust control, mobility, and less hand fatigue, the RTSC 400 is exactly the right kind of tool. It is especially well suited to tradespeople who do a lot of on-site finish sanding and want something compact, clean-running, and easier to live with than a cord dragging across every surface.
Cleaner Sanding Where Finish Quality Matters
When you’re sanding for paint or clear finish, dust gets in the way fast. The RTSC 400 gives you the option to run with the included reusable dust bag or connect to a Festool extractor for a much cleaner work area.
- Supports near-dust-free sanding with extractor connection
- Cleaner airflow helps you see the surface as you work
Swap Batteries Fast and Keep Moving
This kit includes two 18V 3.1Ah ERGO Bluetooth batteries, so you can keep one on the tool and one on charge. That setup makes more sense on site than dragging a cord through finished rooms.
- Up to 30 minutes of cordless runtime
- Quick recharge time of 25 minutes with the included TCL 6 charger
Organized Kit for Jobsite and Shop
Festool users tend to care about staying organized because lost abrasives and loose accessories waste time. This bundle includes Systainer storage, including the Granat abrasive value set Systainer shown, so your sanding setup stays together.
- Sys3 Systainer keeps the tool, batteries, and accessories protected
- Granat 80 x 133 abrasive storage helps keep consumables sorted and ready
What’s in the Box
- (1) RTSC 400 Cordless Sander
- (1) StickFix Sanding Pad, Soft
- (1) Edge Protector
- (1) Reusable Dust Bag
- (2) 18V 3.1Ah ERGO Bluetooth Batteries
- (1) TCL 6 Charger
- (1) Sys3 Systainer
- (1) Granat 80 x 133 Abrasive Value Set Systainer
Optional AC adapter for corded operation is not included.
Key Specifications
| Voltage (V) | 18V |
|---|---|
| Motor Type | Brushless |
| Battery Capacity | 3.1Ah |
| Runtime | Up to 30 min |
| Charge Time | 25 min |
| Weight (lbs) | 3 lb |
| Power Source | Cordless with optional AC adapter capability |
| Made In | Germany |
Compatibility
Battery Platform Only compatible with Festool 18V ERGO batteries. Dust Extraction Works with the included reusable dust bag or a Festool dust extractor for cleaner sanding. Power Options Optional AC adapter allows corded operation when continuous runtime is more important than mobility.
Built For
Finish CarpentryCabinetryWoodworkingPainting PrepRemodelingDoors and TrimSurface Prep Between CoatsPunch List Work
Pro Tip
Use the edge protector whenever you’re sanding near installed trim, face frames, or finished panels. It is a simple add-on, but it can save you from one careless bump that turns a quick sanding pass into a touch-up job.
Warranty & Support
Covered by Festool’s 3-year Service All-Inclusive warranty.
Tool Nut’s Take
Tool Nut’s Take
Festool RTSC 400 18V Brushless Hybrid Sander Set w/ Granat Abrasive Value Set Systainer for clean finish work
This is the kind of sander you buy when finish quality, dust control, and comfort on the job actually matter.
- Who it’s for: Finish carpenters, cabinet installers, painters, remodelers, and woodworkers doing trim, doors, panels, and final surface prep.
- Why it stands out: The hybrid power setup is the smart part. You get cordless freedom when you want it, plus the option to go corded with an adapter when you need nonstop runtime.
- Worth knowing: This is not a rough material removal machine. It is a controlled, clean-running finish sander, and it only works with Festool 18V ERGO batteries.
Common Questions
- Is this a cordless or corded sander? It is primarily an 18V cordless sander, but it has a hybrid design and can also run with an optional AC adapter.
- What batteries does it use? It is only compatible with Festool 18V ERGO batteries.
- Can it be used with dust extraction? Yes. You can use the included reusable dust bag or connect it to a Festool dust extractor for near-dust-free sanding.
- How long does it run and how fast does it charge? Festool states up to 30 minutes of runtime from the 3.1Ah batteries and a recharge time of 25 minutes.
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