I have some concrete to grind and i was wondering about using a RAS with a MIDI and a segmented diamond cup. i own none of the above and was just thinking it would be a good dust controlled option. Not to mention and good excuse to expand the collection. Any thoughts on using these tools in that application?
RAS and MIDI
- Thread starter jlyons
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AlexThePalex
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My thought is that they will do just fine.
The Midi will handle the dust. In Europe there are many more attachments for the RAS than there are here. If you can find a grinding cup that will thread and seat properly then from a performance aspect you should be good once you get used to moving the dust collection shroud on the RAS. Just my opinion of course.
Peter
Peter
My first Festool purchase was a CT-26 because I needed to scarify 1100 sq/ft of concrete in my home. Bought the vac to attach to this Bosch concrete grinder http://www.amazon.com/Bosch-1773AK-Concrete-Surfacing-Grinder/dp/B0000719W8. Worked very well, though it took a very very long time. Since then I've used the same setup about 5 more times with good success however the last time I rented a much larger machine and used the grinder for edging. I've also been sucked into the Festool vortex and will never go back. Never thought of using my RAS for this purpose. As mentioned the hardest part would be finding a grinding wheel that attaches properly.
RJNeal
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I would include cyclone collector to help keep the midi's bag from filling up to fast.
Rj
Rj
Kev
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I've been eyeing some of the Protool concrete grinding gear ... Shame it's not in the US/Canada.
I have a bathroom that needs tile removal and the Protool gear looks to be perfect for flattening after tiles are removed from the floor.
I say all this because I'm not certain that the RAS is necessarily going to give the result you're after if you need to grind concrete dead level ... there may be an better option (I'm not certain of the concrete grinding tools available in your neck of he woods that may be similar to the Protool options).
I have a bathroom that needs tile removal and the Protool gear looks to be perfect for flattening after tiles are removed from the floor.
I say all this because I'm not certain that the RAS is necessarily going to give the result you're after if you need to grind concrete dead level ... there may be an better option (I'm not certain of the concrete grinding tools available in your neck of he woods that may be similar to the Protool options).
AlexThePalex
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jlyons said:
They do .... standard M14 thread that is. [smile] Probably not standard in NA.
Brice Burrell
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Alex said:
As Alex said the RAS uses a standard size used in Europe but not here in N. America. If you dig around you can find M14 sized grinder accessories here.
I'd love to encourage you to buy the midi and ras. They were my first purchases and they're both excellent... But..
I used my new midi with the Oneida ultimate dust deputy and a concrete grinder (a 7" I believe) and it was very frustrating. The DD did not catch much of the dust, or to be specific the dust it did not catch went into the midi and clogged the pores of the bag. I didn't realize this at first though and thought the weak suction may be better with a larger hose which I bought. I think the dust that gets through the DD is so fine that it kills the suction. I ended up using my crappy shop vac to finish it! The CT 36 AC was just out but I couldn't justify it.
Ive used the ras a lot. To utilize the dust collection bristles only some of the pad should be sanding so the dust is directed towards the collection. I've used it flat the way one uses a Rolex which worked great for removal but not that great for collection. That's where I don't think it would be worth using with the diamond grinding wheel.
Just my opinion though.
I used my new midi with the Oneida ultimate dust deputy and a concrete grinder (a 7" I believe) and it was very frustrating. The DD did not catch much of the dust, or to be specific the dust it did not catch went into the midi and clogged the pores of the bag. I didn't realize this at first though and thought the weak suction may be better with a larger hose which I bought. I think the dust that gets through the DD is so fine that it kills the suction. I ended up using my crappy shop vac to finish it! The CT 36 AC was just out but I couldn't justify it.
Ive used the ras a lot. To utilize the dust collection bristles only some of the pad should be sanding so the dust is directed towards the collection. I've used it flat the way one uses a Rolex which worked great for removal but not that great for collection. That's where I don't think it would be worth using with the diamond grinding wheel.
Just my opinion though.
This type of discussion has come up before if you care to search back in the FOG archives. It would depend on how much area and roughness of the surface. Grinding concrete by hand (or hand held sanders) can get very old very fast. the dust is probably finer than any dust developed from woodworking. even if not any finer, it is heavier in a given voluum, but still light enough to not settle in a cyclone. It can, if not contained by any kind of vac system, float into every corner and crevase of any room in the house (don't ask how i know, it is a rather long story i have related elsewhere on the FOG) Aside from the dust problem, there is a certain amount of weight necessary to do a proper grinding job. A small area and/or not very rough surface and not much problem. A large area and/or very rough surface and you would do well to rent a piece of equipment meant for the job.
I am running late for an evening meeting. Gotta run.
Tinker
I am running late for an evening meeting. Gotta run.
Tinker
