Wood Biscuit Size Chart: Your Guide to Perfect Joinery

If you like working with wood and making cool stuff, using unique pieces of wood called wood biscuits can help make your projects strong and look great. These little wood pieces might not seem important, but they can make a big difference in how well your pieces fit together.

If you’ve ever been unsure about which size of wood biscuit to use, don’t worry; many people feel the same way. I’ve felt that way too! 

In this guide, I’ll explain everything you need to understand about wood biscuit sizes. This guide will help you feel confident when choosing the proper biscuit for your next fantastic project. 

So, grab a drink, get comfortable, and learn about the different wood biscuit sizes together. 

Ready? Let’s begin!

Understanding Wood Biscuits

Before we get into the details of picking the best wood biscuit size, let’s ensure we know what these little things are all about. 

A wood biscuit is a compressed oval-shaped beech or engineered wood piece. It’s used to combine two pieces of wood, making their connection stronger and more stable in woodworking projects.

Woodworkers often use biscuit joints for making tabletops, cabinets, and frames.

Wood Biscuit Size Chart: Your Handy Reference

Now, let’s go deeper into the important stuff: the wood biscuit size chart. 

Consider this chart your helpful tool for picking the right biscuit size for your building. The chart shows many different biscuit sizes, from small #0 to big #20. 

Each size tells you how long, wide, and thick it is. This chart will be your woodworking sidekick!

#045 x 16 x 4 mm1.77″ x 0.62″ x 0.16″
#1054 x 20 x 4 mm2.12″ x 0.79″ x 0.16″
#2058 x 25 x 4 mm2.28″ x 0.98″ x 0.16″

Here’s a sneak peek into the chart’s insights:

#0 Biscuits: Best suited for thin pieces of wood, these delicate biscuits are perfect for decorative joints where strength isn’t the primary concern.

#10 Biscuits: A versatile choice that balances strength and aesthetics. These are commonly used for mid-sized joints in various woodworking applications.

#20 Biscuits: Robust and sturdy, these biscuits are the go-to option for heavy load-bearing joints and structural woodworking projects.

Joint Types and Biscuit Sizes

Different joint types call for different biscuit sizes to optimize strength and aesthetics. For instance:

Butt joints: These are ideal for connecting the ends of two boards. Consider using #10 biscuits for standard butt joints, but upgrading to #20 biscuits might be wise if the joint supports substantial weight.

Miter joints: These angled joints are often found in picture frames and corners. #10 biscuits are generally suitable, but depending on the size and purpose of the frame, you might choose #0 or #20 biscuits for more delicate or robust connections, respectively.

Edge joints: Connecting the edges of two boards requires biscuits that effectively align and reinforce the joint. #10 biscuits are usually a safe bet, but larger or smaller options can be selected based on your specific project.

Tips for Making Strong Biscuit Joints

Here are some helpful tips to make sure your biscuit joints turn out great:

Be accurate with marking: Mark exactly where the biscuits should go on both pieces of wood. It helps everything fit together perfectly when you’re assembling.

Use glue smartly: Put glue in the biscuit slots and on them. It makes the joint strong when the glue dries.

Clamp the right way: Clamping things properly means the pressure is spread out evenly. It makes the joint tight as the glue sets.

Avoid These Common Mistakes

As you learn about woodworking, remember these things to avoid:

Size doesn’t mean everything: Bigger biscuits sometimes strengthen things. Think about how things look and how much weight they can handle.

Alignment matters: A giant biscuit will only fix things if the pieces align. Being precise when marking and cutting is super important.


Now you know how to pick the right wood biscuit size for your projects confidently. The wood biscuit size chart is like your trusty friend, helping you make solid and good-looking joints. 

Always remember woodworking is both an art and a skill. Getting good at it means paying attention to small things. 

When you choose the right wood biscuit size, you’re getting closer to making things that last a long time and impress everyone who sees them. 

Keep enjoying your woodworking journey!

Read also:

Wood Biscuit Size Chart

1 thought on “Wood Biscuit Size Chart: Your Guide to Perfect Joinery”

  1. Fantastic guide, Thomas! Your breakdown of wood biscuit sizes and their applications is a game-changer. I’ve struggled with this, and your clear explanations make a huge difference. Thanks for simplifying the process and boosting my woodworking game!


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