When it comes to door knob installation, you’ll need to use a hole saw. But what size hole saw do you need for a door knob?
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Door knob hole saws are typically sized to cut a 2-1/8” hole in a door. This is the industry standard size for most residential knob and lever applications. If you are installing a commercial grade lever, you may need a larger hole saw. Be sure to check the specifications of your chosen product to ensure you have the right size hole saw for the job.
What is a hole saw?
A hole saw (also styled holesaw), is a type of saw used to cut circular holes in a variety of materials using a drill. Hole saws are classified according to two systems: the first is the diameter of the blank, while the second is the major diameter of the cut (the size of the hole). Generally speaking, you would use a hole saw that is slightly larger than the size of hole you wish to cut.
Most hole saws have a female pilot drill bit (arbor) at their center to keep the saw cutting on-center, and come in sizes between 3/4″ and 6″ in diameter. They are generally used in wood, plastic and light metal.
What are the different types of hole saws?
Hole saws come in a variety of sizes and types, each suited for different purposes. The most common hole saws are used for making holes in wood, metal, or plastic. There are also hole saws designed for special applications such as masonry or concrete drilling.
To choose the right size hole saw for your project, you need to know the thickness of the material you’ll be cutting through. For example, a 2″ hole saw would be used to cut through a door that is 1-3/4″ thick. The chart below provides a general guideline for choosing the right size hole saw.
Size Material Thickness
3/4″ Up to 1/2″
1″ Up to 3/4″
1-1/4″ Up to 1″
1-3/4″ Up to 1-1/2″
2-1/4″ Up to 2″
What is the difference between a hole saw and a door knob?
A hole saw is a type of saw that is used to cut holes in a variety of materials. Door knobs are a type of hardware that is used to open and close doors.
How to measure a door knob for a hole saw
You’ll need to measure the door knob to find out what size hole saw you need. To do this, you’ll need to measure the diameter of the hole saw. The hole saw should be slightly larger than the door knob so that it can fit over the door knob.
Measuring the diameter of the hole saw
When you are measuring the diameter of the hole saw, you will need to take into account the size of the door knob as well as the size of the base. The base is usually larger than the door knob, so you will need to measure both. The best way to do this is to measure from one side of the door knob to the other and then add 1/8 inch to that measurement. This will give you the diameter of the hole saw that you will need.
Measuring the depth of the hole saw
To measure the depth of the hole saw, you will need to measure the thickness of the door knob. This can be done with a measuring tape or a ruler. Once you have the measurement, you will need to add 1/8 inch to this measurement. This will give you the depth of the hole saw that you need to cut through the door knob.
How to select the right size hole saw for a door knob
When it comes to selecting the right size hole saw for a door knob, there are a few things to keep in mind. The first is the size of the door knob itself. The second is the size of the hole that needs to be cut. And the third is the thickness of the material that the hole will be cut through.
Here are a few general guidelines to help you select the right size hole saw for a door knob:
-For door knobs that are 1 inch in diameter, you will need a hole saw that is 1-1/2 inches in diameter.
-For door knobs that are 1-1/4 inches in diameter, you will need a hole saw that is 2 inches in diameter.
-For door knobs that are 1-1/2 inches in diameter, you will need a hole saw that is 2-1/2 inches in diameter.
-And for door knobs that are 2 inches in diameter, you will need a hole saw that is 3 inches in diameter.
Depending on the size of the door knob, you will need a different sized hole saw. If the door knob is small, you will need a smaller hole saw. If the door knob is large, you will need a larger hole saw.