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Topic: How to calculate bevel angles for cutting combined compound angles?
Replies: 4   Last Post: Mar 12, 2013 8:16 PM

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 Wally W. Posts: 283 Registered: 6/15/11
Re: How to calculate bevel angles for cutting combined compound angles?
Posted: Mar 10, 2013 1:44 PM

On Sun, 10 Mar 2013 10:09:02 -0700 (PDT), Christoph J. WALTHER wrote:

>With a miter saw I want to cut the end of a beam (fig. 1 in the sketch I posted here: http://goo.gl/6Fqtk ) so that two miter cuts (arrow heads, fig. 3) at 54.4° result at their intersection in a given angle (base angle, fig. 2 and fig. 4) of 10.3° in my example (for a more visual description one might check this video here: https://www.youtube.com/watch?v=R31PlxhhBFg where, however, it gets omitted to mention that bevel angle need to be applied). I did a test cut with setting the bevel angle at 5°, tilting right and left respectively for each of the cuts, what resulted in a base angle of approx. 8°. So the approach seems to be correct, but I need to be able to control it and hence I need help in calculating the bevel angle to set at the miter saw when cutting the two miter angles. Any help, even hints pointing into the right direction, is greatly appreciated! TIA!!!

http://www.yandex.com/

Several results here:
http://www.yandex.com/yandsearch?text=compound+miter+calculator

One of the calculators from this result might help:
http://www.jansson.us/jcompound.html

The "General Compound Angles 2" section begins half way down the page.

Date Subject Author
3/10/13 Wally W.
3/10/13 James Waldby
3/11/13 Narasimham
3/12/13 Brian Q. Hutchings