How to Grind Concrete?

mosesbotbol · 03-21-2020, 12:12 PM

How do you recommend grinding or sanding down the casting marks on concrete as pictured below? I eventually want to paint concrete white, but want it to look better than that.

Ideas, tips?

Brandon · 03-21-2020, 12:40 PM

get an angle grinder and concrete grinding pads. easily found online

kydsid · 03-21-2020, 02:41 PM

I'd wash the wall, fill imperfections if any I don't want with patching mud, sand, then skim coat with stucco. Probably an acrylic stucco.

I've sanded concrete before, never again, heh.

retired · 03-21-2020, 05:18 PM

grinder method works very well...be sure to wear a breathing apparatus and eye protection.

markem · 03-21-2020, 06:13 PM

Quote:

Originally Posted by retired

grinder method works very well...be sure to wear a breathing apparatus and eye protection.

This. That stuff is nasty if inhaled. My advice would be to wet sand it to keep down the dust.

mosesbotbol · 03-23-2020, 02:14 PM

Thanks. Is the wet sanding just having a hose over it while grinding?

03-21-2020, 12:12 PM	#1
mosesbotbol That's a Corgi Join Date: Oct 2008 First Name: Moses Location: Boston Posts: 6,171 Trading: (6)	How to Grind Concrete? How do you recommend grinding or sanding down the casting marks on concrete as pictured below? I eventually want to paint concrete white, but want it to look better than that. Ideas, tips? __________________ Port Wine & Claret \| British Cars \| Welsh Corgi's

03-21-2020, 12:40 PM	#2
Brandon Trout chaser Join Date: Mar 2009 Location: The ATL Posts: 154 Trading: (0)	Re: How to Grind Concrete? get an angle grinder and concrete grinding pads. easily found online

03-21-2020, 02:41 PM	#3
kydsid Ditat Deus Join Date: Apr 2009 First Name: Jason Location: Among the Pines Posts: 2,361 Trading: (46)	Re: How to Grind Concrete? I'd wash the wall, fill imperfections if any I don't want with patching mud, sand, then skim coat with stucco. Probably an acrylic stucco. I've sanded concrete before, never again, heh. __________________ Check out the Cigar Asylum Newbie Sampler Trade

03-21-2020, 05:18 PM	#4
retired Adjusting to the Life Join Date: Feb 2020 First Name: lenny Location: Kanuckistan..for now Posts: 372 Trading: (0)	Re: How to Grind Concrete? grinder method works very well...be sure to wear a breathing apparatus and eye protection. __________________ smoke 'em if ya got 'em Hard to believe I beat out 2 million other sperm

03-23-2020, 02:14 PM	#6
mosesbotbol That's a Corgi Join Date: Oct 2008 First Name: Moses Location: Boston Posts: 6,171 Trading: (6)	Re: How to Grind Concrete? Thanks. Is the wet sanding just having a hose over it while grinding? __________________ Port Wine & Claret \| British Cars \| Welsh Corgi's