Birdsmouth router bits - Router Forums
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post #1 of 25 (permalink) Old 08-03-2019, 03:04 PM Thread Starter
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Default Birdsmouth router bits

I got a set of birdsmouth style router bits a while back and gave one a try for the first time the other day. I made a planter out of some 5/4 x 4 cedar decking from our HD store. The bit instructions are for 1/2 or 3/4 material but they did the 1" thick material just fine. I went with the 16 segment bit so 16 pieces 11 7/8" long came out of 2 eight footers.

I set my fence a little farther ahead than recommended so that I wouldn't have issues with snipe at the end of the boards. This left very small lips at the joints which I hand planed off later but made the setup much easier and the routing more reliable.

I realized right away that trying to glue up 16 individual pieces was going to be just about impossible so I glued pairs of them up first. This allowed them to stand on their own after so the rest went pretty well. When I glued the pairs together I got all of them together in a circle and then put some ratchet straps on them (ones I got from Lee Valley with no hooks) and cinched them together. They came together pretty well. All but two of the joints were perfect. The other two had gaps and the planter is slightly oval shaped instead of round.

So I'm curious if anyone else has used these bits much and what your experiences are with getting joints tight. I'm thinking next time I might build a couple of gluing clamps at a 22.5 degree angle to make sure the pairs are glued together at the correct angle and see if that helps. Anyone else have experience to share?

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #2 of 25 (permalink) Old 08-03-2019, 03:53 PM
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What about making a circular 'form' to act as a temporary brace on the inside. Slightly under the finished inside diameter would be my thought, for ease of removal afterwards.
Maybe even cut in half across the face, then fix a patch across the face to hold it together until you need to get it out.
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post #3 of 25 (permalink) Old 08-03-2019, 04:03 PM Thread Starter
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You'd still need something to hold the individual slats in place until you get them all together and a strap on them. That would be tricky but gluing pairs made that part easy. Maybe the circular form side would help get the eight pairs together. I should check around the outside to see if all the angles are the same I guess but right now I'm working on my Silverado's front brakes.

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post #4 of 25 (permalink) Old 08-03-2019, 04:04 PM
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Quote:
Originally Posted by DaninVan View Post
What about making a circular 'form' to act as a temporary brace on the inside. Slightly under the finished inside diameter would be my thought, for ease of removal afterwards.
Maybe even cut in half across the face, then fix a patch across the face to hold it together until you need to get it out.
When I make my buckets, (no birds mouth,just straight cuts) I do like @DaninVan and make a round donut the od the size of the id of the bucket.
I lay the staves tight together on 2 ribbons of tape,glue, then roll them into a circle. Then insert the donuts and put the clamps on,this holds them in shape for a circle.
On the buckets I do dado the bottom into the staves when making them, that also keeps the bottom in shape as I roll them up.
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post #5 of 25 (permalink) Old 08-03-2019, 05:06 PM
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dado blade for the cuts..
flat edged inside templates (2) to hold the roundish shape.. (cut a skosh light)
outside donuts as a keepers... (a fuzz light)
super slow set glue... (Weldbond)
set the staves as you want...
set the donuts as a clamps/retainers...
shims between the donuts and IS template to perfection...
now add the ratchet clamps (3) if needed...
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This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
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post #6 of 25 (permalink) Old 08-03-2019, 05:11 PM
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@Cherryville Chuck .
I use the Birdsmouth bits In making planter barrels and a combination of the approaches suggested by @DaninVan and @Herb Stoops for the glue up. I cut and assemble the base for the barrel and a piece of heavy cardboard to match it in size and shape. The cardboard serves as a temporary top to the barrel for the glue up. I lay the staves out on 2” wide painters tape and then roll them around the base and the cardboard piece to complete the barrel. Once that is in place I use banding similar to what you use for the base and top being careful not to crush the cardboard at the top.

Adding a bit of wax to the edge of the cardboard keeps it from sticking to the barrel.

A critical choice in the process is whether or not you want the joints to overlap or not as that will impact the fit and sizeing. I use the overlapped version which is easily sanded away once the glUe up is finished. This also keeps the joints from slipping during the roll up phase.
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post #7 of 25 (permalink) Old 08-03-2019, 06:44 PM
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I forgot about the masking tape part of the process; bouquets to Herb and Jon for that advice!
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post #8 of 25 (permalink) Old 08-03-2019, 06:54 PM
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Quote:
Originally Posted by DaninVan View Post
I forgot about the masking tape part of the process; bouquets to Herb and Jon for that advice!
me too..
thanks Herb and Jon...

but I'm going to hold on the bouquets...
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This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
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post #9 of 25 (permalink) Old 08-03-2019, 11:47 PM
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me too..
thanks Herb and Jon...

but I'm going to hold on the bouquets...
A little flower power goes a long way.
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post #10 of 25 (permalink) Old 08-04-2019, 12:32 AM
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A little flower power goes a long way.
apple pie...

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
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