That's not what I was hoping to hear. They also have scarifier assemblies for this unit. Here is what the manual says about the stones and scarifier assembly.
This is the unit I would be renting if the scaifiers will work.
http://www.edcoinc.com/index.html/s...r/session_id/40bf2b82a1e267884f622ffa3419db92
Scarifiers (used with “multi-discs”)
Scarifiers are used to grind slab surfaces. The action is
faster than with grinding stones leaving a “rough sandpaper
fi nish” that may be desirable for non-slip fl oors, ceramic tile
installation or epoxy mortars.
The action of the steel cutter wheels is to “pick” away
the concrete from around the aggregates. The cutter will
not grind the aggregate, consequently, the aggregate will
remain exposed and above the surface of the slab. In some
instances the aggregate will loosen or split and break away
from the concrete bond. This condition can be controlled
and is useful when an exposed aggregate surface is required.
If the desired end result is a smooth, fl at surface - use scarifi
ers fi rst for fast surface removal, then change to coarse
grit (C-10-S) grinding stones to bring the high aggregate to
the level of the slab.
Grinding Stones
Grinding Stones are generally used when there is a need
to remove trowel marks, rain spots, excess concrete, rough
fi nishes, or high spots less than 1/16” (2mm) in height. A
variety of grit sizes are available, beginning with a super
course C-10-S to very fi ne polishing types C-80 and C-120
used to grind terrazzo and marble. The EDCO grinder will
remove up to 1/16” (2mm) of concrete at the rate of approximately
500 sq. ft/hr. (46 sq. m/hr.) using grinding stones of
the C-10-S grit. Extra weight can be added to the grinder to
improve the grinding speed. The hardness of the surface,
size of aggregate, age of slab or additives and sealers required
to meet surface specifi cations will affect the grinding
speed and rate of removal.
Industrial Surfacer Discs
