I was thinking about the slantsided jewelry box and how to apply any alternative methods on that. Then I thought that it could be fun to try to make it with truly slanted sides of consistent thickness instead of beveling the sides on the table saw.
This implicate a complex joinery - a compound joint with both a miter and a bevel. To calculate the angles I used the Compound Saw Calculator
. The angle of the sides are 8 deg and when I calculated that I got the Miter Angle 7.9 deg and the Blade Tilt 44.4 deg.
Easy enough, but how do I set that up on my table saw? I don't have a tilt box and a digital protractor but as far as I understand these gadgets have an accuracy of 0.1 deg so maybe they are not the full answer either.
I decided to go for the trial and error method. I set my TS crosscut fence to approx 8 deg (in my case closer to 10 than 5).
No rocket science so far.......
Then I tilted the blade to between 44 and 45 deg, picked up some scrap stock and started to make test cuts. I didn't move the fence, all adjustments were made with tilting the blade. After just a couple of trials I had a good fit, a square corner and a side angle of approx 8 deg.
I resawed some birch for the side blanks, jointed, planed and cut them to size. Then I cut the miter on the left corner. To cut the other I had to reset the fence to 82.1 deg. This required some new test cuts on scrap pieces (this time I tweaked the fence, not the tilt) and then cut the other corner.
Next I had to do was to cut a bevel on the edges of the sides boards so that both bottom and top edges are horisontal. I used a bevel gauge to find the angle....
..... and used it to set the blade at that angle.