Rabbeting strakes on Northeast Dory

I'm building a dory from plans and am at the point where I need to rabbet the strakes where they fit together. The manual says use a rabbeting bit with a bearing and shows a picture of a small rabbetting bit.

The rabbet required is 1/8" deep by 3/4" wide so the actual bit needed has a 2" diameter. It looks to be a monster bit and I'm aprehensive about riding this on the edge of 6 mil strakes.

I've considered easing into the cut by making multiple passes at different depths and using different sized bearings.

I'm also thinking of double sticking the mating strakes together to provide more of a surface for the bearing to ride on.

Another idea is to put the router and bit in a table and move the strakes past the bit in  a long out door area or ??

It would be great to hear from someone who has done this before and get some input.





4 replies:

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RE: Rabbeting strakes on Northeast Dory

   I used a rabbiting bit for this. It worked well but I had to make a base for the router to accommodate the large bit. In retrospect, I would probably try using a straight bit with a guide running along the strake. It would take a two or three passes but be cheaper and not require the router base modification. Enjoy the build. I took mine out for her second sail Wednesday. 


RE: Rabbeting strakes on Northeast Dory

I havent done this before, but I hate large router bits and I hate routing in thin wood, so what about this?   Set up a small drill mounted drum sander like this:


then lower the drum so it sticks up the same distance as the width of your rabbet.

Then screw a vertical board on the board (a fence) close to the drum the distance being = the thickness of the finished lap and you just push the boards vertically  thru the slot and sand off the proper amount.




RE: Rabbeting strakes on Northeast Dory

A rabbetting block plane lets you do this without bringing heavy power tools near delicate wood. Keep the blade sharp and it will go easily through okoume quietly enough that family and neighbors won't complain and you won't have to wear ear protection. It also doesn't fling sawdust everywhere and you can feel the action between the wood and the blade. That last lets you notice any problems and stop before they get out of hand, instead of powering through and ruining the wood.

Have fun,



RE: Rabbeting strakes on Northeast Dory

Thanks for the input. I ended up taking the bit by the horns and now it is done. All went smoothly. It was very dusty.

I like the idea of a rabbeting block plane with a fence, though the fence could not be very long because the edge of the strakes that is rabbeted is concave.

Laszlo, do you know of a good one like this?


Looking forward to wiring it all together soon! 

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