How to find the angle of a rafter with a speed square ( check the description for the whole process)
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- čas přidán 28. 07. 2024
- My apologies friends, I forgot that it is different if you put the square on the bottom,
The correct angle to cut is 43 degrees NOT 47. You have to subtract 47 degrees from 90 degrees to get correct angle if you use the speed square this way.
You can do this from the top of the rafter, but if you measure from the bottom, you need to subtract your finding from 90
In this video, Mr. Kongable discusses how to use a speed square to find the angle of a rafter with it is unknown.
music is copyright free:
Wanderlust - Scott Buckley (No Copyright Music)
www.youtube.com/watch?v=s3fEb.
This tutorial has just increased my knowledge on the use of a speed square,thanks for sharing bud, awesome !!👍🏻
Glad it helped
I don’t know if he teaches or not but man should definitely be teaching construction I swear half the videos I see on CZcams tho I know what they trying to say they don’t fully explain they self this man kept it very plain and simple
Thanks for the kind words, I actually teach High school shop class
@@mr.kongable I don’t know what state u in but I definitely would look into doing seminars once a month online or a few times a month I guarantee people would definitely tune in for sure I know I definitely would
@@Ridesharfacts I have quite a few videos about construction and woodworking in the channel and if you have suggestions, I’d be all ears
Thank you for simplifying it! Awesome tip I'm going to screenshot this for when I forget 😁
Absolutely, I’m glad it helped
I watched this video 1 day too late! Was doing this exact thing but struggled trying to figure it out and the cuts came out horrible 😢
But great and simple explanation from start to finish. Thank you
Thanks for the view, I’m sorry you had so much trouble with the cuts, I’ve been there when I was learning , I figure it’s tuition payments in the school of hard knocks
@@mr.kongable Haha 👍
Thanks Mr. Kongable!! I honestly never knew how to use the pivot point. The only part that's confusing is how you knew it's a 13:12 pitch.
Thanks for the view, I’m planning on making another video that explains he speed square more in depth. Hopefully I can better communicate how it works.
The easiest way to find the pitch/angle of an existing rafter it to do the following: put a level on the rafter , position the level to plumb, draw a line. Put your pivot point on the bottom of the vertical pencil line and read the angle on your speed square where the underside of the rafter intersects the degree numbers. - super simple and always accurate.
You are correct. I just wanted to show how you would find the pitch if you didn't have a level handy.
My CZcams channel is for people who are new to carpentry, woodworking, and welding. Many of my students don't have their own level, but they can get a speed square pretty easily. Thanks for your input, I appreciate it.
Thank you so much! I'm trying to build a basic slanted frame to put a shade clothe or eventually some of that plastic roofing on.
So i greatly appreciate it!
Lol now i just have to figure out how to figure out the cut angle before i cut them!
My tall side is 12 and my short is 8 feet... I don't think it should be to awful to figure out lol 😅 yeah I suck at math!
@@urielgrey sounds like you have a fun project, good luck!
Great ! And very helpfull!
Glad it helped! Thanks for watching
You can also put to the pivot point up top rest a level on it and level over would be a little more accurate. Not knowing if the plum cut on the rafter is actually plum or not
Good tip
true. hard work is it's own reward. installing my own solar and have to do some carpentry to hang it.
That’s awesome! Do you have a video about it? I’d love to see your solar set up.
@@mr.kongable I have a few and some stills. I was thinking after it's done I'd make a compilation video
Thank you
Absolutely , thanks for watching
Your first pivot you say its 47 then you make a line. Then you pivot it more and say the second line is your 47 degree again????
The first line wasn’t 47, it was 37. Mistakes happen
My square moved on me and I didn’t realize it so the second line is correct
Speed squares come with a manual giving simple instructions on their use , this is way to difficult . Place the speed square pivot at the bottom of rafter as you did , then using a small torpedo level , level the base , read the scale and that's it ! Will tell you the pitch , angle to cut ! The end cut of the rafter is s plumb cut , you'll need to know more to do your birds mouth cut , hip or valley !
I wish I had the little book that it comes with, my speed square is over 20 years old, maybe it’s time for a new one
Not a 13. /12 pitch more like 8/12. You can walk a roof up to about 9 or 10 /12 pitch. Hope that helps.
its more like a 11/12, I made the mistake of doing the extra step in the video, but I listed what should be done in the description.
why not use a sliding bevel.
That’s one way to find it, but I didn’t carry a sliding bevel in my tool bags when I worked construction, but I always had my speed square. Good tip though, the sliding bevel is a super handy tool
Anyone use a digital angle finder?
I’ve never used one before
The correct angle to cut is 43 degrees NOT 47. You have to subtract 47 degrees from 90 degrees to get correct angle if you use the speed square the way you did.
You are correct, I forgot that, I wrote that in the description. Thanks for your help
You've got that backwards buddy. 47° is the opposite angle to make a full 90°.
Could you make a video and send me the link, I'll be looking forward to seeing it.
@@mr.kongable unfortunately I'm better with wood than making videos my man. I'd be glad to show you but I don't make CZcams videos.
choose your vocation or your vocation chooses you.
Well said
100 % wrong! That only works for a 12/12 . If that rafter was a 8/12 then the cut angle would be 35.5 deg. To use the square properly the back of the square would be held level in relation to the angle then you would read the angle as indicated on the common scale
Could you make a video showing your technique?
You are incorrect sir. You must rotate the speed square at its pivot point to plumb then read the angle. Jesus does anyone know anything anymore?
@@maxkady9478 that’s exactly what I’m saying just in a different manner
@@stevenfoust3782 I know buddy! I’m agreeing with you
@maxkady9478 I thought that's what he did but the backwards way. I know their are a few ways you can use that square. I never understood it though because the damn book they give you is confusing. It's better to ask a master carpenter. Do you have an illustration we could watch?
So...is it your contention to work hard - not smart? I personally take great pride in working smart, not hard.
I try to express to my students that a person should work hard mentally and physically , working hard in whatever they are doing.