I dont get how to quarter round aroundhexagon or octagon typewalls?

Answer 1

Divide the degrees you're turning by the # of pieces of trim.
That should be your cut angle.

Answer 2

Get a t-bevel. Just measure the angle and divide by two, that's what you set the saw. Everyone is assuming it is equilateral hexagon and octagon, which is not necessarily the case. Set the T-bevel, go to the saw and with the T-bevel handle against the fence rotate the saw until the the saw blade touches the T-bevel blade. Note the angle on the miter saw and divide by two, bisecting the angle. That is the cut. Of course you should perform this WITHOUT the saw plugged in. Just to state the obvious.

Answer 3

actually the degree you need is 22 1/2. If you have a miter saw, there should be a automatic stop on this. Just like the 45 degree and so on. The 22 1/2 is what you need for octogon which is half of a 45 degree angle

Answer 4

i am currently finishing a 20000 sq ft building made up of 4 octagons and you have to check each spot your are cutting for because if you building is anything like this one the walls are not perfect and of course you want your finish work to be i hope you are doing your own building or getting paid hourly.
use a bevel square and divid it in half and if you have some scrap lumber around cut some test pieces to make sure every thing comes out great. take great pride in your work. fishish carpentry is an art

Answer 5

Robling is dead on. Home depot sells a corner gauge in the tool section that can help with this. The basic theory is to find the angle of the corner and divide by two. Good Luck

Answer 6

360° in a circle
6 sides? 60°
8 sides? 45°

Answer 7

first you have to find the degree of the angle then set your mitre saw to that degree and cut