Review of Festool: Hidden marvel - RAS 115 sander.

VictorL

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Feb 15, 2007
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Hidden marvel - RAS 115 sander.

There aren't many publications about  the RAS 115 sander. I'll try to fill this gap.
This is a rotary 115mm (4 1/2") sander. This sander will be shipped in Systainer 2 and it comes standard with:

- RAS-115 sander
- Systainer 2
- StickFix sanding pad soft
- Wrench
- Several sanding sheets
- Extra side handle.
- Instruction manual

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The sander's length is around 300 mm or 12". Sander uses 115mm (4 1/2")  round sanding pads.  Festool produces sandpaper for RAS 115 from P24 to P180 grits.
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RAS 115 uses sandpaper without holes. That's because RAS-115 uses "Debris collection" system instead of "Dust collection" system.
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Festool produces soft and hard sanding pads. To remove the sanding pad, press and hold a button on the top of the sander and turn the pad counter clock wise.  Sanding pads have M14 thread.

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The standard side handle accessory gives more convenience and extra control. This would be helpful for lefties.

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The power switch is conveniently located on the left side of the sander.
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Sander has 27mm dust chute, and permanently attached power cord.
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Sanding near the edge is not problem. You can use the sander's body as fence for sanding floors.
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Why is this sander unique and worth looking at it? Because it is a material eating beast.
Let's compare two similar size sanders RO-125 and RAS 115 in real life.
There is vintage board with poly varnish and paint on it. There are 5+ layers of finish on it.
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First test is for RAS - 115 with P80 sandpaper. After 35 seconds board is completely clean of varnishes. There is a deep stain that goes too deep into the wood, so I decided do not sand through board :) .

Second test is for RO-125 in the rotary mode with P60 sandpaper. After one min and 15 seconds there is still some paint and varnish. Plus RAS 115 used finer grit sandpaper. I left my 4 1/2" P36 for more tough finish removal job :) .

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For another test I took rough sawn board. RAS-115 flattened it in 25 seconds with P120 sandpaper, RO-125 spent 50 seconds with P50 sandpaper. Still RAS spent less time with finer grit sandpaper.  
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RAS 115 is faster than RO-125, but RO-125 makes smoother surface, plus RO-125 collects 99% of dust, RAS-115 collects around 80-90% brush inserts helps to collect more dust.
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There is another "undocumented" possibility for RAS-115: it can accept polishing accessories from RO-125. Polishing pads are just couple millimeters bigger than sanding pad of RAS-115
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Conclusion:
This is a great sander for stripping paint and varnish and for rough sanding. With Saphir P36, RAS-115 chews floor varnish without hesitation. The Sander is well balanced and easy to control. The sander met my expectations.

 
I recently purchase the RAS 115 to cope crown. It work very well. Faster than a Collins coping foot.

Don
 
I have wanted this little guy(RAS 115) when the Rotex 150 just would not remove material fast enough. Those times are few and far between.

It seems they can work out a better dust collection solution system for the RAS 115 rather easily.  Maybe through the pad collection? I am starting to see full rotary sanders with through the pad collection. Nice review.
 
You should try to get your hands on a RAS. The perimeter brush, when rotated to the proper orientation, allows for almost total dust extraction.

It's very different from the typical, through-the-pad dust extraction but it really works. I wouldn't have believed it before I experienced it.

Tom
 
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