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There are also 30grit brazed metal and resinbased discs that grind less aggressively. Grinding produces vast amounts of cuttings. It is best done wet to eliminate the clouds of hazardous silica dust that are generated when concrete is ground dry.
The High Speed Floor Grinder utilizes a larger diamond disc This unit runs at a much faster speed so various inserts such as carbide cutters, stones, or DymaSerts are not available for it It is designed to remove material fast It can be used to remove painted traffic lines or to grind down the concrete.
2 #0183;#32;Concrete is often ground down to obtain a glasslike smooth finish. There are various tools used for grinding concrete. The floor grinder is used to grind and smooth large concrete floors; the rightangle grinder is used to grind and smooth corners and concrete countertops; the belt sander is used to grind countertops and small floors and the orbital sander is used to place a fine, smooth
#0183;#32;Polishing concrete is very similar to sanding wood. Machines equipped with diamondsegmented abrasives (akin to sandpaper) are used to grind down concrete surfaces to the desired degree of shine and smoothness. As when sanding wood, you gradually progress from coarsergrit to finergrit abrasives.
Dont grind indoors unless you have proper ventilation. Most grinding is done while the concrete is still in the formwork. The walls of the form are used as a guide to make sure the piece is being ground flat. You can use a high speed angle grinder with a concrete grinding disc.
POLISHED CONCRETE VS. GRIND AND SEALED CONCRETE 1. Appearance. Sometimes it may be hard to spot the difference between polished concrete and sealed concrete because they look almost identical. Both polished and grind/seal concrete floors can have a matte, satin, or gloss appearance.
How to quickly sand concrete that is not visually seen? If a concrete surface is hidden and not exposed it would be silly to use an orbital sander as you would for exposed concrete as this is very slow. The quickest way to sand concrete is to grind it with either a inch or a 9inch angle grinder equipped with a masonry grinding stone.
Tips amp; HowTos, Concrete Polishing, Vol. 14 No. 3 April 2014 Concrete Polishing Tips: Slow Grind Speeds, Cool Tools and Sweeping Compound Pitfalls
#0183;#32;Or get a concrete saw and cut some kerfs, chisel out with an air hammer, then grind it flat. Depending on how the door is used, if any water is put on the concrete on the inside, it would have trouble getting out when a speed bump is added.
Video of the full grinding and polishing process with the FASTGRIND system under a power trowel. See how to grind and polish a concrete floor with speeds like never before. This floor was polished all the way up to grid 8000 in the PRO finishing process.
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