Whew! That's a long name for a short tool.
The RO 90 arrived Monday. I ordered it Thursday from Bob Marino. It was packed better than eggs.
I'm sanding stain and varnish off 26 year old kitchen cabinet face frames. I started using the RO 125 but quickly realized that wasn't the best tool to do it all. I was looking at the Deltex 93 but was directed to the RO 90. After seeing all that it could do, I decided that was the best tool to plunk down my money on.
Working in Rotex mode, I found it to be pretty much the same as the 125, just a little lighter. I'm working vertically and on surfaces no wider than 3-1/4". Starting with Granat 80, it did a pretty good job. BTW, I tried Cristal 60 with the RO 125 and wasn't impressed. The abrasive quickly lost it's grit. Granat seems to be a great all-around.
Anyway, I alternated between the 90 & 125. I started with Granat 80 on the RO 90 but after a while decided 120 worked just as well, when you consider I'd have to go back with 120 anyway.
In Deltex mode I was surprised to find it removed the finish as fast or faster than Rotex mode. But dust pickup was noticeably deficient compared to the RO 125 or ETS 125 or the Rotex mode on the RO 90. But when you consider the Deltex pad doesn't rotate, that's understandable.
Arthur(itis) is visiting me more often now. Working with the RO 125 my hands hurt after a while. The RO 90, not so much. The ETS, even less.
All of the kitchen cabinets are filled with the usual stuff. There's very little dust evident. Granat seems oblivious to stains and varnish but clogs with crud (that's a generic term ). There was some crud at the bottom of the garbage cabinet. Hey, it's been 26 years!
The ability to rotate the delta paper means you can get the most out of the edges and tips of the paper. I found the paper slides a bit on the pad when you're getting into tight places. The delta paper needed replacing sooner than the round paper.
I have always hated sanding. It was tedious and brutal on my allergies. Festool has made that unpleasant part of woodworking more tolerable. The RO 90 will get a good workout.