The hole saw can be a friend or a fiend. It all depends how you
learn to use and respect it. Besides the need for a lot of steady torque, hole saws work
best when run according to the max speed recommended on the side of the hole saw itself.
Running a hole saw too fast, does not cut faster. Running it too slow and you run the risk
of it binding, chattering, and or skipping to the point where it could snap the center
The chart below lists the drill by cat # and the recommended maximum bit that
should be used. Since these model numbers are for Milwaukee products you need do a
comparison with a drill you own. The best way to use this chart is to look at the
"twist drill" specification for Wood and Fiberglass, which is considered the
maximum size for the chuck of each of these drill models. Then compare across to the
maximum size recommended for other bits.
For example, the 1/4" twist bit, (top row) maximum for a small drill
that runs 2000 rpm, has a maximum hole saw capacity of 1 3/4". If your trying
to use a larger hole saw it that drill, you run the risk of damaging the drill, the boat,
and yourself. The drill isn't designed to do the job.
Match the hole saw, the drill, and drill speed to the recommended
specifications of the tools. You'll experience less hole saw skip, meaning less damage to
the boat, because it'll be easier to control the drill.
Remember that some hole saws have the recommended saw speed stamped into the
housing of the hole saw.
tip: When cutting thru carpeted or vinyl covered panels... run the
hole saw backwards to cut thru the soft material to prevent ripping.
When you get down to the panel, change saw direction back to normal to
cut the panel material.