Regarding creating a trapezoidal box with different angle folds

[venkatasaipavan97]

Hi, 

I am trying to create a trapezoidal box with one fold angled and others at 90 degrees. I have created a model using flange tool and edited the profile of flanges using the sketch and extrude options to fill the gap between the angled fold as it was not auto-mitred. i am attaching the files in this chat. could you please review the file and suggest me any direct method for auto mitre of angled flanges in Fusion. 

Thank you

[jhackney1972]

You do not understand what Auto Miter is in Fusion sheet metal.  Your corners are as tight as you are going to get them.  The Miter Corners option is used to miter flanges in the same plane as shown in the screen capture below.  To miter the ends of your flanges would involve the "beveling" of the sheet metal edges which is not possible using the sheet metal tools.

[venkatasaipavan97]

Thank you for the reply 

But if the angles are 90 degrees it comes automatically as you said but if you see my model one fold is angled at 75 degrees. So there is a gap in the folds which needs to be corrected by creating a sketch and extruding it. It takes a lot of time calculating the angles and distances. Sometimes the flanges even collide if the angles is less than 60. I was just curious about if there's any direct method in Fusion like 'coner seam' which I came across in Autodesk Inventor. 

[jhackney1972]

Sorry, I did not understand your question.  I thought you were referring to the vertical edges at the corners.  I do not think there is an automatic way of getting these corners to auto miter.  I will scratch my head a bit more but ...

[TheCADWhisperer · Accepted solution]

@venkatasaipavan97 

Your first sketch is blue (under constrained) and has an unnecessary duplicated dimension.

Fully define your sketches...

[venkatasaipavan97]

Thank you @TheCADWhisperer, I never thought of that approach.

[TheCADWhisperer]

@venkatasaipavan97 

That is the way we used to do it in different CAD programs before sheet metal tools came along.