re: Bird's Mouth Joint

Table saw method worked well enough for this application.  I cut the joint first and then cut the taper end to end on the square side. 

I got the tower for a lighthouse glued up and I spent a little time using a hand plane to make it mostly round.  The joints were not perfect.  I put a little CA a couple of them where there was a paper thin gap but I am happy with the results.  I think that I should have tapered it a little more.  

I still need to square the ends.  The top is obviously slightly tilted.  The light is a solar powered one that charges during the day and comes on and spins at night.