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Badeloft
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Drilling Sink Holes
At Badeloft USA, none of our Stone Resin sinks arrive pre-drilled for faucet holes as some clients prefer wall-
mounted faucets. One of the reasons that many sinks come without predrilled holes is because of the ever-
growing number of sink faucet congurations.
Don’t worry... Stone Resin is completely drillable with standard drill bits and hole saws and is moderately dicult
to break. However, you must be careful not to mar the surface when drilling.
Lay the countertop/sink across a solid pair of sawhorses. Apply
painters blue tape to the approximate area of where you want the
faucet to go. Be generous in your tape coverage; however it is not
necessary to apply multiple layers of tape. The purpose of the tape is
to oer a little protection to the countertop and to give you a better
surface to write on.
Measure the width of the counter top (or the width of the actual sink)
and divide by two. This is the center of the sink. If you are installing a faucet that requires only one hole, drill
the hole here. If your faucet has 3 holes you should determine if
a 4-inch spread or an 8-inch spread is desired. If a 4-inch spread
is desired, then measure 2 inches from the center to the left and
right. If and 8 inch spread is required measure 4 inches to the left
and right. Mark this on the blue tape...
Stone resin can only be drilled with a router, hole saw or spiral
drill bit. Do not use an auger-style bit or sabre saw... it will
microfracture the material, which can lead to widespread cracking!
We recommend a carbide grit hole saw.
The drilling is done in two steps. First, drill a locator hole through the countertop at each of the three marks. This
hole should be just slightly smaller than the size of the pilot bit of your carbide grit hole saw. Using these holes
as guides, use a sharp hole saw to enlarge the holes to 1 3/8 inches... the
standard size. Under no circumstances drill a hole larger than this.
Use a very sharp hole saw. If you don‘t, a few things can happen. The worst is that
the hole saw will bind while drilling, skip out of the hole and destroy your entire day
along with the sink. A dull blade tends to generate lots of heat, which can cause the
plastic resin in the stone resin to melt or burn onto the hole saw, making it duller and
increasing the heat, etc. and so on. Furthermore, the excessive pressure needed to
coax a dull drill could cause the stone resin to break or crack. If you are not sure of the
sharpness of that old hole-saw that you have laying in your garage, just buy a new
one!
Keep the drill speed moderately low... just apply enough power to keep the holes saw
cutting at an even rate. If the saw seems to be bogging down, increase the speed a little. Don‘t exert too much
downward force... let the sharp hole saw do the work.