The Router Bits - Creating Finger Joints with your Router

Patrick Holcombe discusses the Finger Joint Bit and its assembly, revealing a joint that is strong and very useful...

Finger joints are the strongest method of butt jointing when using a router bit to cut the profile. The tapered fingers interlock and create a joint that is stronger than the timber by increasing the gluing surface area by up to 10 times over a standard butt joint.

The tapered profile makes it simpler and easier to assemble the work pieces when gluing. Finger joints are used in many structural jointing applications where strength is of the greatest importance and you can rest easy knowing that you have creating a bond stronger than wood when using this method of jointing.

[James]

Probably the only clip that explains the maths clearly...

[mikedisimile]

Thank you.
You did a great job explaining everything 👍

[FritsvanDoorn]

I always wondered how to use them. Thank you for the instruction.

[kasader]

I am having a little trouble wth mine. I’m setting it up for 35mm stock. By the time I adjust the height of the bottom of the middle finger aligns with the centre of the stock, the bearing is below the table. Any suggestions? I’ve tried taking out one finger, but still no go.

[frankmiraglia]

Hi Patrick,
Followed your instructions on how to finger jointing, I tried it on 2 pieces of 33mm thick Vic Ash, cutting not an issue, found the joint was a very loose fit, no where as good your demo.
Do you have any suggestions.
Cheers
Frank

[andyc]

Great vid. Q. What router table is that your using?

[rickkern]

The thicker cutter is 1.5 times as thick.

[djjudge]

Always wear ear protection when using a router!