How to drill A Door Hole Bigger
How to Drill a Larger Doorknob Hole
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normally replacing the doorknob give
very simple matter but the hole in this
older door which used to fit a standard
sized doorknob is no longer the hole
size you need to fit today's standard
sized doorknob in fact you need a larger
hole in order to get a new doorknob to
fit in there so the old standard size
hole was an inch and 3/4 the new
standard size hole is 2 inches in 1/8 so
we're going to need to take this door
off and bar larger hole so to drill our
hole in the door we'll need to remove
the door and we want to do that by
removing the hinges from the jamb don't
take them from the door side take them
off from the jail once you have the door
off the hinges you want to lie it down
on a flat surface we're outside if
you're fortunate to have a workshop or
indoor area where you can put your door
by your door flat that's great what you
want to do is put some towel or some
kind of padding underneath it so you
don't scratch the door on your new
doorknob you'll see measurements two and
three eighths inch setback and two and
three-quarter inch setback all that
means is the center of the hole that's
the center where the knob goes so if you
have a two and three eighths inch
setback that means the center of your
locking mechanism on your knob will be
two and three eighths inch back from the
edge of the door if you have a two and
three-quarter inch setback that means
the center of your hole or your knob
will be two and three-quarters inches
back from the edge of the door this
happens to be a two and three eighths
inch setback with your new doorknob
there will be a template and what you
want to do with that template just
follow the instructions increase it
typically crease along the edge of the
door and that will show you where your
new hole is going to be this hole here
is for a two and three eighths inch
setback which we have the other hole
that's on your template is for two and
three quarter inch set Bank
determine which one you have and that
will show you where your new pole is
supposed to go you will also need a hole
saw to an 1/8 inch hole saw such as this
one or perhaps this one to drill your
new hole you have a couple of options
you can go to a home center or hardware
store and purchase one of these door
lock installation kits or doorknob jig
and they will have the proper size hole
for you already built in these costs
from anywhere from $30 to maybe 45 or
$50 this is an older one if you're not
using a jig then what you want to do is
attach a couple of pieces of plywood
with a clamp that holds firmly in place
and you want to get your template of
your doorknob kit line up the latch hole
with the center of your template bring
it down even with the edge then you want
to trace your hole which you'll be
cutting this is the two and 3/8 inch
setback hole the other one if that's the
one you need is a two and three-quarter
inch setback and you can cut that out
once you have your circle drawn and you
can take your keyhole saw and cut right
through the wood I don't want my jig to
scratch the surface of the door so what
I'm going to do is put a thin piece of
plywood underneath it and also down on
this side of the door we clamp my jig on
and then it won't scratch the door so
we'll put the piece of plywood on the
bottom of the clamp here slide that into
place and we want to line it up
carefully make sure you've got your hole
in the right spot you only get one
chance and then you'll be buying a new
door
and I'll slide my other one into place
and I will clamp it tightly you can look
through the latch hole on your jig make
sure that's lined up that'll give you a
double check you've heard the old saying
measure twice cut once well with doors
you want to measure five or six times
and cut once you want to be sure okay
we're ready to drill
put your keyhole saw right in there and
you want to watch as you saw that you
remain perfectly perpendicular to the
door so you don't have a crooked hole
what I'm going to do is saw halfway
through the door on this side and then
go through on the other side
[Music]
[Applause]
okay we've got about halfway through
this piece of wood here won't come out
until we drill through the other side
halfway and then the core will pop out
of there okay once we've cut through
least half or more on the other side we
take our door jig off turn the door over
we'll do the same from the other side it
will place piece of plywood underneath
so we don't scratch up the door and put
anyone here and we want to make sure we
are lined up exactly right we will
tighten our jig okay once you've got the
hole cut then you double check it
perfect fits the template perfectly next
we put the door back up and screw the
hinges back into the door jamb
