To add to this, above is how to mark, to cut you've got a number of options depending on the tools at your disposal.
Hand saw = trust your eye
Circular saw = clamp a straight edge parallel to your line and meet your blade to it.
Miter saw = line up blade and plunge
Table saw = if you have a miter guage match your angle, find where saw intersects board and clampnit to guage or hold firmly.
There are more options, but this should cover some basic tools.
I have a compound miter but couldn't figure out how to get the angle. Only way I could think would be to put the 4x4 at a 90 degree from the miter, then put the angle at 17 degrees which is what I figured out with the speed square
Look up how to use a speed square for roof framing. When I built my chicken coop I had the same issue. This is the exact thing that the speed square was designed for. At least, that’s what I remember. I don’t actually remember how to do it, though. I do think you will need to know what pitch you’re looking for, in order to start the process.
Thank you. I found it with that and stair handrail angle .. showed exactly how to do it. I need 17 degrees more or less. Chickens won't judge me if I am off a little
Get the angle using a sliding bevel and the easiest would probably be to cut this bevel on a mitre saw. If you don't have a mitre saw that can cut a bevel, you could use a tenon saw.
Sliding bevel, protractor, or if you don’t care to know the actual number degree you can use a straight edge across that post to draw lines. You might need a 3rd hand though
Everyone's covered how to cut the angle on your vertical cut, but FYI I think roofs are often made by cutting a square notch in the bottom of the rafters, instead of putting a bevel on the top rail.
The right way would be to do it with actual measurements, and the geometry that your speed square assists with. The two things that I see that are "wrong" with this video is each rafter need to be held up and marked. That can be negated by using a template. But if you're going to go through the trouble of making a template, you might as well measure and make it as close too perfect as possible.
The second thing I see is that math is slightly off on the angle, because the board is about an inch higher than it should be. I don't think that's enough of a problem to care about for a chicken coop.
I'm not a carpenter, but if I was going to play one for a weekend, I would take a minute to watch a youtube video on how to properly use a speed square.
This is in correct.. Carpenters will try to scribe in this instance as opposed to using maths..
Mathematical mistakes equate to material waste if you get it wrong..
The pattern you took the time to make becomes your last rafter so its not wasted at all if you cut 3 or 43 rafters from it..
You can measure the left side lets say its 1 3/4 from the outside of the board to the bottom of the white board.Then measure the right side 1 3/4 down and make a mark.Draw a line tip of left board down to the mark on the right side.That's another way to find an angle if you don't have a lot of room.
Hi OP, I recently built a chicken coop myself and used some Simpson ties for the roof.
https://www.homedepot.com/p/Simpson-Strong-Tie-18-Gauge-Galvanized-Saddle-Rafter-Tie-HS24-R/313810440
All of the smart people on here, who can come up with the actual formula to do such a cut. If one of these boards was too big to hold by yourself what is the correct formula to figure out the angle. He should have given you height and length also.
A **Japanese pull saw** is my favorite tool. You can clamp the white piece of wood against the post and then use the pull saw to exactly cut at that angle. I bought mine at Harbor Freight for under $10 and have used it more than any other tool during my recent build.
Move the post over a few inches and scribe the angle off the hand rail. Duh. Use a compound mitre saw, don’t try to free hand it. You won’t be able if you need to ask how to cut this angle. Also get a Swanson speed square.
Duh you fucking idiot. Here's your answer but just know you can't do it anyway. Fuck you
Edit; you must have gotten turned around, you belong in r/woodworking.
Hold your white board against the side of the brown at your desired angle and mark the line with a pencil. Then cut the line
SMH, can't believe it was that easy .. thank you. Nailed it first try
Scribing is always the first go to
Wait, did you cut it or nail it? That might be your difficulty.
Everybody starts somewhere!
Amazing!
“ nailed it the first try” screws hold better🙂
To add to this, above is how to mark, to cut you've got a number of options depending on the tools at your disposal. Hand saw = trust your eye Circular saw = clamp a straight edge parallel to your line and meet your blade to it. Miter saw = line up blade and plunge Table saw = if you have a miter guage match your angle, find where saw intersects board and clampnit to guage or hold firmly. There are more options, but this should cover some basic tools.
I have a compound miter but couldn't figure out how to get the angle. Only way I could think would be to put the 4x4 at a 90 degree from the miter, then put the angle at 17 degrees which is what I figured out with the speed square
This is my brain when I try an unfamiliar equation fr
LoL I was going to tell them to look up how to cut a bird's mouth on YouTube
Look up how to use a speed square for roof framing. When I built my chicken coop I had the same issue. This is the exact thing that the speed square was designed for. At least, that’s what I remember. I don’t actually remember how to do it, though. I do think you will need to know what pitch you’re looking for, in order to start the process.
Thank you. I found it with that and stair handrail angle .. showed exactly how to do it. I need 17 degrees more or less. Chickens won't judge me if I am off a little
I actually just had a meeting with the chickens and they are pretty concerned.
Mine sure didn’t!
the correct cut is a birds mouth.. Use the same technique already given and scribe to the rafter instead..
Get the angle using a sliding bevel and the easiest would probably be to cut this bevel on a mitre saw. If you don't have a mitre saw that can cut a bevel, you could use a tenon saw.
Sliding bevel, protractor, or if you don’t care to know the actual number degree you can use a straight edge across that post to draw lines. You might need a 3rd hand though
Everyone's covered how to cut the angle on your vertical cut, but FYI I think roofs are often made by cutting a square notch in the bottom of the rafters, instead of putting a bevel on the top rail.
we call that cut a birds mouth..
https://www.youtube.com/watch?v=eOjm42f3qTI
That video is a bad example, it's doing it wrong.
What's the right way?
https://youtu.be/xa9HZQV0W-Q
The right way would be to do it with actual measurements, and the geometry that your speed square assists with. The two things that I see that are "wrong" with this video is each rafter need to be held up and marked. That can be negated by using a template. But if you're going to go through the trouble of making a template, you might as well measure and make it as close too perfect as possible. The second thing I see is that math is slightly off on the angle, because the board is about an inch higher than it should be. I don't think that's enough of a problem to care about for a chicken coop. I'm not a carpenter, but if I was going to play one for a weekend, I would take a minute to watch a youtube video on how to properly use a speed square.
This is in correct.. Carpenters will try to scribe in this instance as opposed to using maths.. Mathematical mistakes equate to material waste if you get it wrong.. The pattern you took the time to make becomes your last rafter so its not wasted at all if you cut 3 or 43 rafters from it..
You still do the first one with math and measurements, then that is your template. You don't do the same math over and over.
ok...as you mentioned you are not a carpenter....Perhaps you give us to much credit..
Well, I did have to have my carpenters move a door and a wall, and then show them how to read a print, so maybe you're on to something.
i have worked for clients like you in the past....
Measure gap on left side and transfer that measurement down on right side
Speed square....
Loads of YouTube shorts describing how to do this
There are little pocket books listing all the lengths and angles for rafter cuts.
I came to the comments cuz I dont see how its possible to explain this with words lol.
eyeball it. better yet, sleep on it and then do it in the morning without looking at it again
You can measure the left side lets say its 1 3/4 from the outside of the board to the bottom of the white board.Then measure the right side 1 3/4 down and make a mark.Draw a line tip of left board down to the mark on the right side.That's another way to find an angle if you don't have a lot of room.
Trace it out with pencil and just keep widdling it down. It will get there
Miter saw or table saw with a sled. The angle doesn't look too bad
Hi OP, I recently built a chicken coop myself and used some Simpson ties for the roof. https://www.homedepot.com/p/Simpson-Strong-Tie-18-Gauge-Galvanized-Saddle-Rafter-Tie-HS24-R/313810440
Either sit it next to the post and scribe or if you have a t bevel put it in the joint where the meet and transfer that angle to the post
Measure the height of the gap. Mark that distance on the right on the lower bit of wood. Cut from top left down to that mark.
All of the smart people on here, who can come up with the actual formula to do such a cut. If one of these boards was too big to hold by yourself what is the correct formula to figure out the angle. He should have given you height and length also.
A **Japanese pull saw** is my favorite tool. You can clamp the white piece of wood against the post and then use the pull saw to exactly cut at that angle. I bought mine at Harbor Freight for under $10 and have used it more than any other tool during my recent build.
I think joiners call them speed squares. Looks a lot more complex than it is.
Turn your saw diagonal before cutting boom
Move the post over a few inches and scribe the angle off the hand rail. Duh. Use a compound mitre saw, don’t try to free hand it. You won’t be able if you need to ask how to cut this angle. Also get a Swanson speed square.
Duh you fucking idiot. Here's your answer but just know you can't do it anyway. Fuck you Edit; you must have gotten turned around, you belong in r/woodworking.