Help with angles

[wvtradbow]

I couldn't think of any where else to ask, an since there's some EXTREMELY talented builders here,I was hoping someone could enlighten me (although several yrs of schooling couldn't lol).. I'm trying to build a fixed rack with 1 1/4" square on my 101 an was wanting something different. I understand a 45degree an 45 makes a 90 but if I put a 30 degree cut ,what would I need to make that 90,hopefully that makes sense before I wastes a lot of $$$

 

[wvtradbow]

I was trying to visualize something like this from Pinterest as a 3/4 rack

 

[jwiereng]

Think about half ways. Example a 90 degree need to be cut at 45.

A 45 need to be cut at 22.5 degrees.

 

[WOODY2]

Just subtract the 30 from 90 in other words a 60 degree cut?

 

[jwiereng]

I think you want to do a 15 degree cut to make a 30 degree joint. The next cut would be 30 degree to make a 60 degree joint. 15+15+30+30 = 90

 

[wvtradbow]

Thanks guys I have some scrap square I’m gonna have to try this,math to me is like religion,I can’t prove any of it haha

 

[chrisBTSC]

Is this what you are after?

 

[wvtradbow]

That’s it exactly

 

[wvtradbow]

So it looks like a 15 an a 15 then 30 degree for the cross bar? Am I seeing that right??

 

[chrisBTSC]

So it looks like a 15 an a 15 then 30 degree for the cross bar? Am I seeing that right??

Yes! Just remember that the surfaces that go together need to have the same angle so there are no mismatches or weird gaps.