How to Find Angles - Trim Carpentry

so you'll need a spacer block and an angle finder I'll show you which one I use here in a second the first step you want to do is take your your spacer block which ours is 4 inches so you're gonna take your PIN pin so whatever you want to use and just kind of draw a line on it on the wall using that spacer as a guide and then in between I have 4 inches to install glide this down and I'll make a point of intersection what you see right here that's Q you're gonna need that the same thing for the bottom now the cool thing about these boxes is that this piece and this piece are exact they're the same angle same measurement same everything this piece and this piece the vertical pieces are exact so I could take this piece and flip it around that way and it's gonna work the exact same way so once we find these two angles we can cut all of our pieces and all the angles are the same well here's the angle finder that I use this is an angle finder made by husky which is a Home Depot Brinn so obviously you can only get it at Home Depot or maybe on Amazon I haven't checked but this one is really cool I like it a lot it's very simple and it's digital so the way this works is it opens up like this it goes both ways like that but what you want to do is keep it closed as flush as you can before you turn it on because that's zeroing it out so they recommend you set it on the table or something but I don't really ever do that so you just set it somewhere flat keep these two rulers close together turn it on and it reads zero point zero so what you're gonna do is for this angle since this is an acute angle if you remember in geometry class an acute angle you're gonna open this up so where it's reading acute which is you know ninety from ninety down that's acute angles so if you--if you got it right here and it says something less than 90 then you're and you're good you're doing it the right way like right here you can see mine says since fifty two point five so that's that angle that I need if you add it where it was saying something in the hundreds then you're you're doing it the wrong way you need to turn it around see that says 307 that's totally not an acute angle so make sure you're reading it the right way on an acute angle so let's see what I had I had fifty two point five and it's good that you when you make these these pin lines that you make them long enough where you can use like the extended part of this rule or if you have them real short you may be off a little bit and that goes for this way in this way so I'll actually extend that line a little bit on both of these now I can get a more accurate reading so always try to get these as close to those lines as possible for the most accurate reading and this takes a little bit of time to get used to because you can't really get this circle part all the way up in there but as long as you're good on these lines and that's 52.5 we'll go with that so once you have that 52.5 what you want to do is all right it on here so you can see you just take 52.5 and you want to divide that by two and whatever that is that's the cut on each side because the angles 52.5 and you split that for each cut and that's how you can find that angle what I'll do now is I'll show you this one it's the exact same thing but this angle is obtuse it's not a cute so whenever you're reading this one you should be in the hundreds so let's see what we got here this is gonna be a little awkward to do but just bear with me this one is 126 I kind of messed up my lines here so you can ignore those but that's exactly what we got here so we know this is gonna be good all the way down so the same thing if this is 126 at that obtuse angle then you just go 126 and you divide that by two so 126 divided by 2 would be 63 and for the acute angle it's 26 and the court so all we got to do now is you know keep going on down the line here so there you have it you see how easy it is to find the points of intersection when you're doing something like this you just use those blocks and you also seen how easy it is to find the angle to cut you need a good angle finder to do it I definitely recommend this one this never told me any lies so that's it hopefully you learned something from this video and I'll catch you all next time

Channel: Finish Carpentry TV

Views: 516,468

Keywords: angles

Id: _g1E0YwPnmQ

Length: 5min 36sec (336 seconds)

Published: Fri Nov 04 2016