Advice on Abrasives Needed.

[festoolfan1000]

Hi all.

Haven't been postin much lately, just poppin in when i get a sec as often as i can, more on that another time.

One of the things I have lacked is a stock of more agressive abrasives and those designed for paint/finish removal.

I have a few tasks around my own home that will require this and and have added the following items to my current pending order:

492848            Abrasives, 80mm x133mm Brilliant2 P40 Grit, 50

492850            Abrasives, 80mm x133mm Brilliant2 P80 Grit, 50

492804            Abrasives, 100mm x 150mm Brilliant2 P40 Grit, 10

492805            Abrasives, 100mm x 150mm Brilliant2 P80 Grit, 10

494032            Abrasives, 5" Diameter Cristal P40 Grit, 50

494034            Abrasives, 5" Diameter Cristal P80 Grit, 50

What should I use to remove paint on concrete with the Rotex? Is the Cristal in the order good for this should I add some of the Saphir? I figure since the purpose of these is to get to bare wood that once there, I can switch to the Rubin paper and move up the grit ladder that way. Hence why I am not considering higher grits (I do have higher grits of the Brilliant paper already for scuff sanding.)

Thanks for your time!

Michael

 

[Daviddubya]

Some of the dealers will sell broken packages of abrasive.  You do not need to order only in the package sizes sold by Festool.  Ask your dealer.

 

[AlexThePalex]

On concrete? Saphir.

Sanding on concrete is like rubbing two pieces of sandpaper together. You'll want a strong paper for that.

 

[Bob Marino]

Alex is correct. I had the occasion to sand a good part of my basement's cement floor last year and Saphir is the best paper for the job. Even for that application; it lasted a long time before wearing down.

Bob

 

[tbellemare]

I haven't sanded concrete yet but I've sanded rough, landscaping limestone using saphir P24 and a Rotex 150. Taking a REALLY rough slab about  2' x 4' x 1-1/2" to an even surface that was ready for finish sanding only took about 15 minutes and one sheet, that I used later to take the silvering off a 2x12 piece of cedar that runs all the way across the top of a 2-stall garage door.

At that point, I threw it away, I thought it deserved a rest...

Tom

 

[Jeff Magnus]

I don't think you can sand concrete very well    The best way to remove paint from concrete is a RAS outfitted with a grinding cup. You can probably find a cup to fit the Rotex, but the machine isn't designed to work such a surface as concrete. The RAS on the other hand, would blow right through it. I have finished many sq. ft. of concrete with my RAS (grinding and polish) and it is by far the best route other then a water feed machine. I wouldn't waste my time with a Rotex and..........sandpaper?