Perfect Lap Joints Every Time - Simple Method Using A Router

In this DIY video, I'll show you how to make consistent and accurate half lap joints every single time. I use a simple method to make lap joints using a router and a wooden spacer.
This method allows you to produce corner lap joints, T lap joints, and cross lap joints.
Perfectly easy half lap joints every time.
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[@stvnrncmn5066]

Could you potentially show how to do this but with an angled lap joint? I want to do a corner lap and a t lap but at an angle other than 90 degrees.
Thanks for ur video

[@Pirate19501]

Great idea

[@JBTV]

👌

[@stvnrncmn5066]

Brilliant thanks for your knowledge

[@dannymurphy1779]

Thanks this is such a good video Justin. I think you can use the wood as a spacer to cut the spacer with the router if you follow me, so long as the edges are butted against something. Just thinking it is easier to cut the spacer without measuring if possible, that is certainly a lesson I have learnt the hard way with woodworking!

[@firstname-qq3xp]

What about a lap joint from butt to butt without corner. Like to make a longer piece?

[@JBTV]

Nice thought, but it wouldn't be very strong. A scarf joint is used to lengthen a piece of timber.

[@CarlYota]

You can do this, depending on the application. It's decently strong. I did it on a jig I made of MDF and the lap wasn't even very long, like 1" or so. When I finally threw it out I couldn't get it to break at the joint. The process of cutting it is no different than any other half lap. Set your bit to half the thickness of the material and just cut out the ends of each board.
a 45 degree scarf joint is basically a miter joint, which is also decently strong and faster to do. I would say the half lap is going to be stronger IF it's a long lap. If it's going to be a 1" lap then might as well scarf it. It's basically about glue surface area. You could also floating tenon the pieces together if you can't afford to lose any length.