Birds Mouth

[staningrimsby]

Hi Guys,

What is the easiest way to create a birdsmouth for mounting on a wall plate or does anybody know of any good websites, been trying all afternoon and cant seem to get it right.

Cheers
Stan

 

[noseall]

are you asking how to mark out the b/m or to actually perform the cut?

 

[^woody^]

The problem with these is that normally the rafter will rotate from a point at the top cut, and so the cut you've done is out unless you allow for this.

Its a bit complicated to describe, but there are some posts in the roofing section on these cuts - search for roofing square or rafter cuts etc - I asked a question previously in [about] March 2007 about how to use a roofing square to mark the angles

 

[staningrimsby]

Cheers woody i will have a look.

 

[staningrimsby]

I think ive worked it out now guys, gonna try it today on a bit of stock wood so i dont waste me 6x2.

The end that connects to the bearing plate will be cut at 22 degrees, the birdsmouth will then have a 22 degree back cut and the other would be 68 degrees thus making the 90 degrees that the wall plate sits at.

I think ive got that right anyway.

 

[staningrimsby]

Yiiippppeeee it worked first go got all me rafters cut in about 3 hours, arm hurts but it looks dapper.