Hi,
There has been a lot of discussion here about diamond grinding methods and tools. We thought it would be helpful to post some photos for Members to see the difference to help them make decisions. Please note that the below is our opinion based on our experience from actual usage since we also own a large concrete surface prep company, Prep-Crete.
The Diamabrush is an excellent tool for light surface prep. It fits on a 115v floor buffer and works well to scratch up concrete and existing coatings for adhesion of epoxies and primers. It can and does often leave swirl marks so using it with a clear coating is not a great idea since the scratches can show through.100% solids epoxies will generally cover these swirls. Since the only downward weight is the fairly light floor buffer itself that it fits onto, there isn't much weight pressing down onto the concrete to grind much depth, at least in a reasonable amount of time. Also since the pads are fairly thin, as they wear, not much more diamond gets exposed so condition of the pads is very important. Finally these tools do not use dust shrouds do they create a lot of dust which has to be vacuumed up. Pic #1 is one of the pads for Diamabrush. The Diamabrush is not in the trade considered a 'grinder'.
A regular concrete floor grinder is heavier and many of them have higher HP motors and run on 220 volt, or the larger ones on 3 phase (not practical for a garage). The grinders have weights in the 200-1,500 lbs downward pressure making for more 'grinding' of the surface and smoothing it out more if you have an irregular surface. Pics #2-3 are of actual diamond grinding tooling pads. As they wear, the metal wears away exposing new/fresh diamonds so they continue to work well as they wear. The amount of square footage you can get from these tools is at least 10x more than the thinner Diamabrush. Grinders have dust shrouds that get hooked up to vacuums to keep dust down.
So, if you really need 'grinding' best to rent a grinder. For general surface prep/light duty work, the Diamabrush is a terrific choice.
Please feel free to email us any photos for free advice on prep. We hope this info is helpful to the Members.
There has been a lot of discussion here about diamond grinding methods and tools. We thought it would be helpful to post some photos for Members to see the difference to help them make decisions. Please note that the below is our opinion based on our experience from actual usage since we also own a large concrete surface prep company, Prep-Crete.
The Diamabrush is an excellent tool for light surface prep. It fits on a 115v floor buffer and works well to scratch up concrete and existing coatings for adhesion of epoxies and primers. It can and does often leave swirl marks so using it with a clear coating is not a great idea since the scratches can show through.100% solids epoxies will generally cover these swirls. Since the only downward weight is the fairly light floor buffer itself that it fits onto, there isn't much weight pressing down onto the concrete to grind much depth, at least in a reasonable amount of time. Also since the pads are fairly thin, as they wear, not much more diamond gets exposed so condition of the pads is very important. Finally these tools do not use dust shrouds do they create a lot of dust which has to be vacuumed up. Pic #1 is one of the pads for Diamabrush. The Diamabrush is not in the trade considered a 'grinder'.
A regular concrete floor grinder is heavier and many of them have higher HP motors and run on 220 volt, or the larger ones on 3 phase (not practical for a garage). The grinders have weights in the 200-1,500 lbs downward pressure making for more 'grinding' of the surface and smoothing it out more if you have an irregular surface. Pics #2-3 are of actual diamond grinding tooling pads. As they wear, the metal wears away exposing new/fresh diamonds so they continue to work well as they wear. The amount of square footage you can get from these tools is at least 10x more than the thinner Diamabrush. Grinders have dust shrouds that get hooked up to vacuums to keep dust down.
So, if you really need 'grinding' best to rent a grinder. For general surface prep/light duty work, the Diamabrush is a terrific choice.
Please feel free to email us any photos for free advice on prep. We hope this info is helpful to the Members.
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