Hole Saw

When it comes to making a large diameter hole in a workpiece, there are several options like hole saws, Forstner bits, and spade bits. But many people get confused among these tools and can’t decide which is the right tool for their work. Here are the basics of these tools that you need to know before selecting any of them.

Hole Saws:

Hole saws are cylindrical rims that have teeth on one edge. They contain two parts – a blade and a mandrel. The blade cuts the materials, and the mandrel attaches the saw to the drill. These tools come in three designs – diamond coated hole saws for glass and masonry cutting applications, carbide tipped hole saws for wood cutting, and bi-metal hole saws for metal cutting applications. The size of hole saws usually ranges from one inch to six inches.

They come with a pilot bit to guide the cut. Hole saws are suitable for applications where you need to make holes between one inch to six inches. The holes made with hole saws usually have rough edges that need to be polished with sandpaper. Hole saws are ideal for drill through a variety of materials.

Hole Saw


Forstner bits are another hole making tool that produces clean and flat-bottom holes. They are also ideal for use with a hand drill. If you need to make a halfway hole in the wood, then Forstner bits are the right choice for you. If you use this tool properly, then you can get the cleanest holes in your workpiece. The size of these bits ranges between ¼ inch and 2-¼ inches.

Forstner bits can only be used with wood materials, whereas hole saws are ideal for cutting different materials. Moreover, they are ideal for low deep holes. Forstner bits are suitable for applications where high accuracy and cleanliness is required.

Spade Bits

Spade bits are useful for making small holes in the wood. These bits are suitable for applications where high speed is required than accuracy and cleanliness. Spade bits usually make cracks on the wood when reaching the other side. So, for the way through holes, you will need to drill the work from both sides to get the desired finish.If you use a sharp spade bit, then you can make holes with less effort. If you want to make a hole of 1-inch diameter and don’t care about the finish, then you can use a spade saw.

Spade bits can drill the thicker wood pieces faster compared to other drilling options though they produce rough holes.These bits are available from ¼ inch to 1 ½ inch. Moreover, they can cut the deepest holes than hole saws and Forstner bits. The disadvantage of spade bits is that they are ideal for cutting wood only.


All three tools are effective in their own way. However, we hope now you know which tool will suit your application. Also, you can consider keeping all the three tools if you think all are ideal for your work.

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