perton said:
I have been fighting with a Makita orbital sander and decided to get an adapter to connect it to my Ryobi Shop Vac. It didn't quite fit, so duck tape came to the rescue. I started sanding plaster top coat on a wall and was astounded at how well it worked. It wasn't dustless, but it was far less than usual. So, now it makes me wonder how well a purpose-built system would work, particularly Festool. I've heard that Festool does dust collection better than anyone, so anyone having used a similar sander and now has a Festool can tell me if the Festool would be equal or better to my jerry-rigged Makita, shop vac, and duck tape.
Funny you should ask. I got into buying Festool sanders and the Dust Extractors exactly for Plaster work back in 2004, not woodworking as a 1st choice for spending a fair bit of money at the time.[ ETS 150/5 and a CT-22]
The fact that the same sanders and Vacs worked as well for actually woodworking once I need them to, was just a bonus.
What really helps for Drywall Compounds, or Plaster work, for me, is having a Cyclone set-up before the Vac, so I don't fill the Vacuum bag, or its all important filter, with fine Drywall compound from sanding. Much more so than woodworking dust in my experience. Early on, before I had Festool Sanders, I killed one or two regular Shop Vac type vacuums, trying to use them for Plaster Dust Collection, hooked to a Bosch Sander I had at the time. Different animals compared to a Festool or Fein Vacuum, so I did more research before finally taking the Festool Plunge.
If you only do occasional Plaster work, you won't need to get a small Cyclone. Just have fresh bags on hand for your Festool Vac. And keep an eye on the Vac filter often.
I also have the Cyclone mounted on my CT-33 Auto-Clean Vacuum, so its a Festool Vacuum that was designed to help self-clean with sanding Drywall type dust in the first place. If you DO have a lot of work with Drywall or Plaster, this IS the type vacuum you'd probably want from Festool in the first place. I bought mine used, they do come up for sale as someone in the Drywall or Plaster Trade sells off tools in a bad year, or changing out to another Brand/tool set-up.
With this set-up, I can sand floors with a Conventional Floor 8"Drum Sander, fill up the Cyclone box with dust, and not the Festool Vacuum. Anti-static grounding has been an issue for some users with a 3rd party Cyclone attached to a Festool Vacuum, but not for me, with a Festool AS 50mm hose between the two items, and grounding straps/strips on the Cyclone box as well. Regular AS hoses from Festool for all Cyclone to tool extraction as well.