Want to add strength and a decorative touch to your miter joints? Splines are just the ticket.
Miter joints are simple to make and look beautiful. But they aren’t very strong.
The 45° edges expose a lot of end grain — and that can become a failing point when you rely on just glue.
Splines add a ton of strength and aesthetics to your miter joints. Best of all, they’re super simple to cut.
Today, I’m going to explain how to make splined miters — from building a jig that makes it easy, to 3 ways you can cut more interesting splines.
This is a super useful technique if you’re into box making. So let’s get to it.