Awhile back, I ran into a situ- ation where I needed to pre-drill 35mm cup holes into the back of a door (two on top and two on bottom) via the CNC machine
to accept sliding track hardware
parts. That seems simple enough
until you realize that this leads to a
problem at the edgebanding stage.
Here’s the gist of the prob-
lem: In the edgebander, there is
a guide – a bearing – that runs
along the top of the door. To be-
gin to understand the potential
problem with pre-drilled holes,
imagine this round bearing and
next to it, the cutter blade; what-
ever surface the bearing travels
along, the cutter follows and
cuts. If the bearing encounters a
hole that’s been cut for the door
hardware and falls down into the
hole, that can lead to the cutter
damaging the edge of the door.
I saw a lean manufactur-
ing video online that offered
a solution for this: To trick the
machine into thinking there’s
not a hole, you make small discs
that loosely fill the predrilled
holes so the edgebander doesn’t
detect the holes. This creates a
level surface for the edgebander
to travel along, and it treats the
door like any other flat panel.
So, I cut out some undersized
MDF plugs, gave this tip a shot
and found that it solved my problem. Finding this advice online
was a great stroke of luck because the alternative would have
been really time-consuming: If
you can’t use your edgebander,
you have to put the edgebanding
on manually, using an iron and
pre-glued edgebanding tape.
You then have to sand the edges
and cut the ends.
As some of you may under-
Lean solution for a detailed challenge
CABINET SHOP TIPS
A timesaving tip makes edgebanding boards with precut holes easier.
by Brian Clancy
Custom-made plugs keep an edgebander from damaging the edge of a
door that has pre-cut holes for hardware.
A CNC machine can easily cut out as many plugs as are needed. The
plugs fool the edgebander into thinking the panel is solid.
When finished, the edgebanding
and door are perfect and
unnecessary handwork has been