Having been a buyer and massive geek of festool kit I have wanted a Rotex RO90 for many years .
The sander is variable speed and has a delta head and a round 90mm head.
The sander is expensive 400£+ plus vat but I managed to get a deal from my local distributor.
Having used the sander for a week now, I’m sadly not satisfied though. Most other products are amazing but not this one…sniff
First, lts not a great balanced tool which means to have to push it flat to make sure the sanding face is parallel to the face and this can lead to swirling edge marks. When using it in side a cabinet for instance the upper inside , you can’t really tell if it’s flat to the face at all, hmmm
The changing of the heads, round to delta, is clumsy. You feel as if you’re not doing the right thing while unlocking them, not to the usual standard.
Using the delta head with festool abrasives AND full extraction left a lot of dust on the surface, I couldn’t believe my eyes. Ok it naturally removed a lot of dust but nothing like the ETS sander which I also own, thats practically, entirely dust free…
The delta head struggled to sand inside of a a drawer front where you’d expect the detail sander to shine.
The soft backing pad has already started to wear on the front point and the abrasives slipped off. Grrrr
The round head is onlyn90mm, thought this would be ideal for kitchen doors but it’s maybe too small in hindsight…
As for the abrasives , where do I start…
You need to buy a different abrasive for the different shaped heads. The abrasives in some grades are in 10’packs but the 220/320 grits are 100’s and this is 30£+ per box…thnk about it. For two grades each for the respective heads you’re talking £120, on sandpaper…
However, I was committed so shopped online and once I used the enigma code machine to decipher the comedic festool naming and part numbering system, I ordered a selection of round and delta triangles. 120£ lighter.
I’m now 500£ plus in to a sander that’s not balanced, suitable for my service, doesn’t take the dust away brilliantly and has the turning circle of a panzer tank in small spaces (you’d need a minimum 350mm to use the tool)
Wish I’d bought the RTS with delta head or DTS with square head - about half the price