What size cabinet knob bit?

If you have decided to renovate your kitchen, you are probably sick of looking for new hardware, what finish to put on the face of the cabinet, etc. However, one thing you need to know is what size bit to use for the cabinet knobs. The last thing you want to do with new cabinet doors is damage them. There are just a few tricks you need to get the job done right without risking the cabinet finish.

First, a brief introduction to the drawer handle pulls. You basically have two types, knob and handle. They can be attached in different ways.

Many handles will have two small screw holes built into the outer flange. These are the easiest to install.

For thicker flush mount pulls and simple knobs, they are bolted through the back of the cabinet and then screwed into the hardware. You will need to be much more careful when drilling the holes for this.

The first step of any job is prep work. You will need a couple of different sized bits, so choosing a drill rate is a good idea. You will not need a full index, you can achieve everything you need with a selection of bits ranging from ¼ to ½ inch.

Make sure the bits are sharp. The last thing you want is to risk the bit walking across the cabinet surface or chipping the wood.

For the screw puller, installation is really easy. Just mark where the screws go. Tap a pilot hole about a third of the way through the face of the cabinet and sink the screws.

Bolt on handles will take a little more time and prep work.

A single bolt knob is the next step in complexity. To do this, you will need to measure from the edge of the knob to the center of the bolt hole. This will be the offset for your drill.

Place a piece of masking tape over the face of the cabinet where you will install the knob. Now trace around the perimeter of the knob. Take your measurement off-center to mark where the center of the bolt hole is.

Use the ¼ inch drill bit to close a pilot hole. Make sure you drill front to back, I know it’s counterintuitive, but this way if you have any splinters it will be on the inside of the cabinet.

Now just turn up the size of the bits until you are large enough to sink the bolt through the door.

Remove the tape, fire the bolt, and tighten the knob.

The more complex door handle will have two bolts. The basic principle is the same.

Apply tape

Measure compensation

Track the mango.

Mark the tape.

Drill the pilot hole and then go up in size until it reaches the size of the bolt.

The only difference in the fixture is that it will tighten the bolt on the back of the cabinet.

So what size bit to use for cabinet knobs is a bit of a misnomer. You will need quite a few different sizes to achieve a sleek professional look.

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