Powermat Charging Spot 3.1, Installation Manual, Page: 8 / 31

Drilling guidelines
3. Step 3 – Drilling
General guidelines:
a. Drilling can be done with a hand tool
b. Make sure the hole saw is facing exactly 90 degrees to the surface
c. It is recommended to use a bit as part of the hole saw
d. Make sure drilling area is covered with painters tape to avoid surface chipping
see Figure 1
NOTE: After drilling, make sure to clean burrs and splinters around top ream in order
to ensure proper fit.
NOTE: Charging Spot requires a wooden substrate underneath any stone surface
Table 1: Drilling Requirements Surface Mounted
Drilling Requirement Value
Hole Profile Through hole
Hole Diameter
2.75” (70mm) Ø
Drilling Tool
On-site Drilling:
 Bi metal hole saw 2.75” / 70mm

Diamond grit hole saw– to be used with a proper
jig
*for on-site hand tools, masking of the hole with
painters tape and the use of a pilot bit is recommended
Off-Site Drilling:
 TCT hole saw – with shop bench-press

CNC/ router – shop only

Diamond grit hole saw– to be used with a proper
jig
Table 2: Drill Type Selection
Important note: Charging Spot requires a wooden substrate underneath any stone surface
Figure 3: Hole saw with a drill bit
Surface Materials Drill types
Wood and wood composites All drills can be used
Corian All drills can be used with the exception
diamond grit hole saw
Quartz and Granite Diamond grit hole saw only