Any of you use your RO to sand concrete?

[rjwz28]

I am building a concrete vessel sink and want to know if any of you used your RO on concrete and what abrasive you used? I have a RO 125 and was hoping I could use it for this purpose.

Thanks,
Rob

 

[sessler2013]

I was wandering the same thing today about using it to remove paint off of an old brick wall...

My concern is whether it will melt the Velcro on the pad; because I've done that to a dewalt sander using it to sand the rust off an old cast iron plate due to heat from friction.

The first abrasive pad stuck really well (a little too well), the rest didn't do so good...

 

[tbellemare]

I have used Festool sanders with Saphir to shape limestone and clean left over mortar off concrete. I have a customer that cleaned a bunch of paint off brick using Granat.

One advantage you get using a Festool sander AND a dust extractor is heat dissipation. The airflow through the pad helps keep it cooler and generally eliminates the pad melting. Of course, with enough effort, any positive benefit can be overwhelmed...

Tom

 

[Administrator_JSVN]

Like Tom said, Saphir is very robust and should be used for hard substances.

Please remember that concrete contains silica, which can cause serious respiratory issues if inhaled. Use proper safety gear including an adequate respiratory. I would recommend not operating in a confined area or inside of a home since the fine dust can linger.

http://www.osha.gov/dsg/topics/silicacrystalline/index.html

 

[fshanno]

I'm sure you can.  I've used my 150/3 to sand several pour in place concrete countertops. 

I stick with Festool for wood but I'd recommend Klingspor for this kind of grunt work.  It's half the price.

I start with 60 and go up as needed depending on the finish.  I'm removing trowel marks, exposing aggregate, rounding corners, easing edges and generally smoothing and polishing.  Never had a problem with heat build up.

 

[rjwz28]

Like Tom said, Saphir is very robust and should be used for hard substances.

Please remember that concrete contains silica, which can cause serious respiratory issues if inhaled. Use proper safety gear including an adequate respiratory. I would recommend not operating in a confined area or inside of a home since the fine dust can linger.

http://www.osha.gov/dsg/topics/silicacrystalline/index.html

Thanks for the safety heads-up Shane.