By Mike McClaran
For as long as I can remember the standard
for RPMs on a 1/2-inch router bit has been
18,000. I’ve even seen tool manufacturers
recommend 18,000 RPM on tools that can
do the same job at 14,000. The fact is, this
is 2019 and tools have come a long way.
You can get out a calculator and figure
out the RPMs and feed speeds, but I still
prefer the old fashioned way.
Sound and temperature are key factors
when determining the optimal chip load.
There are a ton of variables here but, for the
most part, there shouldn’t be any high pitch
noise coming from the bit when routing.
Now, when we talk about temperature,
we are referring to the chips. Warm is no
good. This means the router bit is spinning
too fast and recutting the chips, creating heat
and lowering tool life dramatically. (When
I say chips, that’s what I mean – not router
dust, which means you mulched vs. cut.)
Want to increase tool
life? Slow your CNC
Decreasing RPM by 1,000 will add
another year to the overall life of your router
motor while increasing your tool life. In fact if
you still get a good cut line after decreasing
RPM by 1,000, try another 1,000 - you might
be surprised at how low you can go.
Source: Mike McClaran is president of Better
Vacuum Cups. For information call 877-872-
2821 or visit GreenBVC.com.
We make the tools for making the future.
ShopBot manufactures CNC tools that inspire
people to turn their ideas into something tangible.
When we see woodworkers put our tools
to work in innovative ways, it reaffirms our
commitment to the mission of making digital
fabrication technology readily accessible and
usable for everyone.
Silvia Oliva & Giuseppe Di Domenico
SOM Design Studio
Santa Cruz de la Sierra, Bolivia
Tool: ShopBot PRSalpha 144” x 60”
with an independent auxiliary pusher.
What else can you manage with
an optimizer? Minimum trim size,
grain orientation or grain matching,
destacking order and labeling information, all of which can make each operation more efficient. Investing some
time to explore the potential of a good
beam saw optimizer, and to make sure
all the parameters are right, can really
pay off in savings of time and money.
Source: Paulo Pezzoli is a product manager
for Biesse. For information call 704-357-3131
or visit Biesse.com.
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