What Angle Do I Need ¿?¿

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im building a simple welding car for 2 welders. my brains not working as fast as i want it to. im using a few pieces of scrap angle iron i had laying around, i dont have much so i didn't want to make cuts that were wrong. i could of used wood i guess.. i have a protractor and another tool to measure angles, but how do i find out what angles i need?i made a rectangle for the bottom, i think its around 24"x12", cant remember exactly. then the 2 back posts are around 20", and i cut a 55° so it would angle up. now i just want to find the angle so it can meet with the front posts. what i just wrote prob makes zero sense lol heres a pic, i edited it with paint lol im pretty new to doing projects and stuff, so anyother tips would help, thanks
Reply:Get yourself a bubble level and a good protractor and then it gets easy..You will have to learn all this without instruction eventually......zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:The inside angles of a 4 sided object will equal 360 degrees.  For example a simple box with four 90 degree corners = 360 degrees.  If you already know 3 of the angles of your box, add them together and subract from 360.  Take the resultant angle and divide it by two and you will know what angle to set your saw at.Hope that makes sense.
Reply:If "C" is 90 deg, and the unlabled corneron the floor is supposed to be 90 deg, then the "A/B" corner will be the difference between the  one marked "55" and 180 deg.I'm guessing your cuts were at 55deg since that angle looks biger than 90. You can't measure angles that way or you'll get F'd up. 2 55 deg cuts gives you an angle of 110 deg, same as 2 45 deg angles will give you a 90 deg corner or 2 22.5 deg angles will give you a 45 deg angle.Not that all that math is done, the simple way is to just cope the cut. Take the 2 pieces and clamp them next to eachother the way they need to be. Take a soap stone and mark where the vert leg of the bottom angle and the vert support meets. Then mark the bottom of the vert leg so it will sit flat on the lower leg of the bottom angle. Cut on those lines and weld. No figureing angles huh? If you really want to cut the diagonal angle, just connect where the 2 corners will meet and thats the angle you need. I'm guessing it's probably 35 deg if I'm understanding what you are trying to do. In the future, it's also simpler for most if you keep the lower angles all at 90 deg and just angle the 2 top corners. As it is I can possibly see you having 2 angled corners on the bottom and that will really confuse the math working it that way. If so I'd clamp and mark all the joints. Oh and wood makes a cheap template to work out complicated angles. I do it all the time trying to figure out compound angles on complex frames. Wood is cheap to cut and easy to get exact angles with a standard miter saw. Then once I'v figured out exact lengths and angles I can transfer them to the final materials and only screw up a few pieces..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Best way to learn is to drawl it to 1/4 scale all the angle will still be the same. drawl what you have and fill in the blanks. That how I do it. You will have a better understanding when done Good luck.                    Vernon
Reply:exactly what vernon said.. i find a piece of graph paper makes it easier to sketch  what im thinking...
Reply:Originally Posted by joedirtThe inside angles of a 4 sided object will equal 360 degrees. For example a simple box with four 90 degree corners = 360 degrees.If you already know 3 of the angles of your box, add them together and subract from 360.
Reply:this is by far the mostly helpful forum i've ever been on, whether its a car, motorcycle forum etc. appreciate the help & info! i have a better idea of what im doing, i'll let ya know how it goes. graph paper is a good idea too, i have  AutoCAD 2010 & 2011, i can't figure out how to properly use the F'n thing tho
Reply:Originally Posted by KYZAACgraph paper is a good idea too, i have  AutoCAD 2010 & 2011, i can't figure out how to properly use the F'n thing tho
Reply:this is by far the mostly helpful forum i've ever been on, whether its a car, motorcycle forum etc. appreciate the help & info! i have a better idea of what im doing, i'll let ya know how it goes.graph paper is a good idea too, i have AutoCAD 2010 & 2011, i can't figure out how to properly use the F'n thing tho
Reply:Originally Posted by MonicaThat's why I love pencil and paper too - I'm not good at computer aided drawrings.  I've got SketchUp I open when I feel ambitious.  Then I bang my head against the wall for an hour before I close it and grab my graph paper again.
Reply:Another thing you can do to figure out the angles is to lay it out on the floor with a soapstone drawing.  It works wonders!
Reply:Pythagorean theorem:in any right triangle the square of the length of the hypotenuse (long side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.Algebraically:   (AxA) + (BxB) = (CxC)  (A squared plus B squared equals C squared.)in which C is the length of the hypotenuse (the long side of the triangle that is opposite the (90°) right angle.If you can do basic math you can also keep these three "Indian" words in mind:Soh Cah Toa  (say the phrase just like it is spelled and you will never forget it).Sine of an angle equals the length of the side Opposite of the ange divided by the length of the HypotenuseCosine of an angle equals the length of the side Adjacent to the angle divided by the length of the Hypotenuse.Tangent of the angle is the length of the side Opposite the angle divided by the length of the side Adjacent to the angle.If you keep an engineering or math book that has a trigonometry table handy you can apply these formulas to find the lengths of the other sides and the degrees of the angle in question.  All you need know is any two values and you can calculate all the others.Remember this, also:  The angle of the dangle is proportionate to the mass.....- MondoLast edited by Mondo; 08-31-2010 at 10:42 PM.Reason: Editorial correction.Member, AWSLincoln ProMIG 140Lincoln AC TombstoneCraftsman Lathe 12 x 24 c1935Atlas MFC Horizontal MillCraftsman Commercial Lathe 12 x 36 c1970- - - I'll just keep on keepin' on.
Reply:This is overkill as this has been answered in many ways, many times at this point, but I need to get a post in since it has been a while. Attached ImagesThe Lord has declared, "This is my work and my glory--to bring to pass the immortality and eternal life of man"  Moses 1:39Link: My name is John, and I am a member of The Church of Jesus Christ of Latter-Day Saints.-- ColdCreekWorks.com --
Reply:Originally Posted by mb_welderAnother thing you can do to figure out the angles is to lay it out on the floor with a soapstone drawing.  It works wonders!
Reply:^^ i started on the garage floor earlier lol Originally Posted by jdh239This is overkill as this has been answered in many ways, many times at this point, but I need to get a post in since it has been a while.
Reply:Originally Posted by jdh239This is overkill as this has been answered in many ways, many times at this point, but I need to get a post in since it has been a while.
Reply:Originally Posted by MondoI am curious about that gargantuan distributor cap in the background.  Is that a part for the Green Giant's garden tractor??  - Mondo
Reply:what distributor cap?
Reply:Originally Posted by MonicaDistributor cap?
Reply:Originally Posted by DSWIt's a blow molded kids chair laying on it's side.
Reply:Originally Posted by KYZAAC^^ i started on the garage floor earlier lolyea, i got the basics figured out now, pretty easy with graph paper. are the measurements on graph paper suppose to equal the actual measurements? i scaled it accurate and they were off a few inches.
Reply:its just a cheap protractor from a math set.
Reply:Originally Posted by DSWIt's a blow molded kids chair laying on it's side.
Reply:hahah i can see it now, i didnt know what you were talking about lolim building a simple welding car for 2 welders. my brains not working as fast as i want it to. im using a few pieces of scrap angle iron i had laying around, i dont have much so i didn't want to make cuts that were wrong. i could of used wood i guess.. i have a protractor and another tool to measure angles, but how do i find out what angles i need?i made a rectangle for the bottom, i think its around 24"x12", cant remember exactly. then the 2 back posts are around 20", and i cut a 55° so it would angle up. now i just want to find the angle so it can meet with the front posts. what i just wrote prob makes zero sense lol heres a pic, i edited it with paint lol im pretty new to doing projects and stuff, so anyother tips would help, thanks
Reply:Get yourself a bubble level and a good protractor and then it gets easy..You will have to learn all this without instruction eventually......zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:The inside angles of a 4 sided object will equal 360 degrees.  For example a simple box with four 90 degree corners = 360 degrees.  If you already know 3 of the angles of your box, add them together and subract from 360.  Take the resultant angle and divide it by two and you will know what angle to set your saw at.Hope that makes sense.
Reply:If "C" is 90 deg, and the unlabled corneron the floor is supposed to be 90 deg, then the "A/B" corner will be the difference between the  one marked "55" and 180 deg.I'm guessing your cuts were at 55deg since that angle looks biger than 90. You can't measure angles that way or you'll get F'd up. 2 55 deg cuts gives you an angle of 110 deg, same as 2 45 deg angles will give you a 90 deg corner or 2 22.5 deg angles will give you a 45 deg angle.Not that all that math is done, the simple way is to just cope the cut. Take the 2 pieces and clamp them next to eachother the way they need to be. Take a soap stone and mark where the vert leg of the bottom angle and the vert support meets. Then mark the bottom of the vert leg so it will sit flat on the lower leg of the bottom angle. Cut on those lines and weld. No figureing angles huh? If you really want to cut the diagonal angle, just connect where the 2 corners will meet and thats the angle you need. I'm guessing it's probably 35 deg if I'm understanding what you are trying to do. In the future, it's also simpler for most if you keep the lower angles all at 90 deg and just angle the 2 top corners. As it is I can possibly see you having 2 angled corners on the bottom and that will really confuse the math working it that way. If so I'd clamp and mark all the joints. Oh and wood makes a cheap template to work out complicated angles. I do it all the time trying to figure out compound angles on complex frames. Wood is cheap to cut and easy to get exact angles with a standard miter saw. Then once I'v figured out exact lengths and angles I can transfer them to the final materials and only screw up a few pieces..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Best way to learn is to drawl it to 1/4 scale all the angle will still be the same. drawl what you have and fill in the blanks. That how I do it. You will have a better understanding when done Good luck.                    Vernon
Reply:exactly what vernon said.. i find a piece of graph paper makes it easier to sketch  what im thinking...
Reply:Originally Posted by joedirtThe inside angles of a 4 sided object will equal 360 degrees. For example a simple box with four 90 degree corners = 360 degrees.If you already know 3 of the angles of your box, add them together and subract from 360.
Reply:this is by far the mostly helpful forum i've ever been on, whether its a car, motorcycle forum etc. appreciate the help & info! i have a better idea of what im doing, i'll let ya know how it goes. graph paper is a good idea too, i have  AutoCAD 2010 & 2011, i can't figure out how to properly use the F'n thing tho
Reply:Originally Posted by KYZAACgraph paper is a good idea too, i have  AutoCAD 2010 & 2011, i can't figure out how to properly use the F'n thing tho
Reply:this is by far the mostly helpful forum i've ever been on, whether its a car, motorcycle forum etc. appreciate the help & info! i have a better idea of what im doing, i'll let ya know how it goes.graph paper is a good idea too, i have AutoCAD 2010 & 2011, i can't figure out how to properly use the F'n thing tho
Reply:Originally Posted by MonicaThat's why I love pencil and paper too - I'm not good at computer aided drawrings.  I've got SketchUp I open when I feel ambitious.  Then I bang my head against the wall for an hour before I close it and grab my graph paper again.
Reply:Another thing you can do to figure out the angles is to lay it out on the floor with a soapstone drawing.  It works wonders!
Reply:Pythagorean theorem:in any right triangle the square of the length of the hypotenuse (long side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.Algebraically:   (AxA) + (BxB) = (CxC)  (A squared plus B squared equals C squared.)in which C is the length of the hypotenuse (the long side of the triangle that is opposite the (90°) right angle.If you can do basic math you can also keep these three "Indian" words in mind:Soh Cah Toa  (say the phrase just like it is spelled and you will never forget it).Sine of an angle equals the length of the side Opposite of the ange divided by the length of the HypotenuseCosine of an angle equals the length of the side Adjacent to the angle divided by the length of the Hypotenuse.Tangent of the angle is the length of the side Opposite the angle divided by the length of the side Adjacent to the angle.If you keep an engineering or math book that has a trigonometry table handy you can apply these formulas to find the lengths of the other sides and the degrees of the angle in question.  All you need know is any two values and you can calculate all the others.Remember this, also:  The angle of the dangle is proportionate to the mass.....- MondoLast edited by Mondo; 08-31-2010 at 10:42 PM.Reason: Editorial correction.Member, AWSLincoln ProMIG 140Lincoln AC TombstoneCraftsman Lathe 12 x 24 c1935Atlas MFC Horizontal MillCraftsman Commercial Lathe 12 x 36 c1970- - - I'll just keep on keepin' on.
Reply:This is overkill as this has been answered in many ways, many times at this point, but I need to get a post in since it has been a while. Attached ImagesThe Lord has declared, "This is my work and my glory--to bring to pass the immortality and eternal life of man"  Moses 1:39Link: My name is John, and I am a member of The Church of Jesus Christ of Latter-Day Saints.-- ColdCreekWorks.com --
Reply:Originally Posted by mb_welderAnother thing you can do to figure out the angles is to lay it out on the floor with a soapstone drawing.  It works wonders!
Reply:^^ i started on the garage floor earlier lol Originally Posted by jdh239This is overkill as this has been answered in many ways, many times at this point, but I need to get a post in since it has been a while.
Reply:Originally Posted by jdh239This is overkill as this has been answered in many ways, many times at this point, but I need to get a post in since it has been a while.
Reply:Originally Posted by MondoI am curious about that gargantuan distributor cap in the background.  Is that a part for the Green Giant's garden tractor??  - Mondo
Reply:what distributor cap?
Reply:Originally Posted by MonicaDistributor cap?
Reply:Originally Posted by DSWIt's a blow molded kids chair laying on it's side.
Reply:Originally Posted by KYZAAC^^ i started on the garage floor earlier lolyea, i got the basics figured out now, pretty easy with graph paper. are the measurements on graph paper suppose to equal the actual measurements? i scaled it accurate and they were off a few inches.
Reply:its just a cheap protractor from a math set.
Reply:Originally Posted by DSWIt's a blow molded kids chair laying on it's side.
Reply:hahah i can see it now, i didnt know what you were talking about lol