Large Dovetail Jig – How to Use
This post is a look at how to use the large tapered dovetail router jig from this Etsy listing.
This router jig allows you to create tapered dovetail mortise and tenon joints. These joints can be used for joists, joining beams, and other 90 degree connections.
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This style of large dovetail joint is commonly used to build timber frame pergolas and pavilions. Now you can use the same joinery as the big timber framing companies without a CNC router!
Learn more about this jig in this YouTube video: https://youtu.be/ABWCaQSZmVw
If you have any questions about using the jig after watching the video, please send us a message on Etsy or on Facebook.
This dovetail tenon jig is designed for use with hand routers.
The tenon jig is adjustable to four different positions. You can create tenons that are 3.5″, 4.5″, 5.5″, or 6.5″ tall. If needed, shim the jig for the a different depth.
Please note that the index piece (the piece you insert into the numbered holes) can be inserted two different ways. This allows you to create half step sizes between the holes. Make sure to use the same setting on both the mortise and tenon jigs.
The tenons are tapered at a 10 degree angle.
The jig is fully supported when screwed into the work piece to prevent the router from tipping over.
The mortise jig creates a pocket matched exactly to the tenon created. Use the scale on the back to match to the tenon.
As mentioned in the video, you may need to plane the end grain of the tenon very slightly to get a perfect fit. A quick pass or two with a small power planer makes this easy.
The mortise and tenon are designed to be “hammer tight.” Use a wooden mallet and/or a wooden block to protect your tenon when seating it.
This jig requires using a 1.5″ dovetail router bit with these specifications.
This is another option for a compatible router bit with the same specs that we’ve also tested.
For both router bits, please make sure you select the 1-1/2″ option because multiple sizes are listed.
- Size - Cutting diameter: 1-1/2"; shank diameter: 1/2"; cutting depth: 1-1/6"; total length: 2-5/9"; dovetail angle: 14 degree
- Material - Made of premium tungsten carbide, the router bit provides high hardness and strength, good wear resistance, heat resistance for...
- Feature - Designed to create the interlocking "tails" and "pins" of a dovetail joint, providing strength, durability, and aesthetic appeal. Dovetail...
You will also need this specific bearing.
- Bearing Type: Bottom Mounted, Inner Diameter: 1/2”, Outer Diameter: 3/4”
- Replace or repair the damaged or lost router bit bearings.
- Contains bearings, set screws and allen wrench to fix any manufacturer's bits at a very affordable price.
This dovetail router jig is made using PETG, which is a durable and UV stable material. However, it should not be exposed to excessive heat otherwise plastic deformation may occur. So, for example, please don’t leave it on your truck dash in summer.
Happy routing!
