How to make mitre on overlapping corners - sheet metal

[ashes.man]

Hi,

Please see attached picture and file.  How do I make a mitered fold on the inside of this corner?

I have tried offsetting the fold edge and all sorts but as soon as I turn on two edges I get an error.

Thanks

Ashley

 

[etfrench]

It would probably be best to do this entirely in the Sheet Metal workspace:

The order making the flanges is important.  Start with the end, then the side.  Override the side bend to 14mm.  Create the mitered flanges by selecting both edges.

[ashes.man]

@etfrench Thankyou for taking the time to look at this.  I was really hoping for a solution that worked with my existing design.  The large gaps and holes created in the corners by the bends are not ideal and have been closed up in my design.  I guess I could manually modify the unfolded layout to close them up?  Having the whole design as sheet metal does make things a little easier.

[ashes.man · Accepted solution]

For reference, attached is a solution that gives nice corner overlap with minimal gap and equal set back on both sides.  It is based on my original design and unfolds correctly.  It is not as nice in some respects as a design based solely on sheet metal tools but IMO gives a better result.

But, in respect to my original question.  It seems there is no way you can create a mitre on overlapping corners using the flange command.  You need to remove the overlap first.

 

[etfrench]

Correct, you can't have two flanges occupying the same space.

[TheCADWhisperer]

@ashes.man 

See Attached...

[carl.j.barker]

I know exactly how you feel.   All 3d cad systems (desclaimer --- that I have used) fail miserably when it comes to sheet metal bend reliefs and fold line notches. Solidworks and Inventor's normal cuts can sometimes come close.

Interlocking mitre flanges and zero relief are a staple of thin sheet welded construction. Done since man invented the forge and hammer, but for some reason it's too had to do in a virtual environment.

Anyway I get around the shortsightedness of 3D kernal makers by using a fake sheetmetal rule with 0.01 inner rad with an obviously bullsh** k factor and use extrude and draft to model the **** thing.

[ashes.man]

@carl.j.barker I couldn't agree with you more.  Why make a CAD tool that can actually make useable sheet metal parts when you can make one that has huge gaps.  Sorry, I cant imagine the complexity and maths involved in modelling that stuff but!  Also, I imagine that my lack of F360 skills also comes into it...

[Anonymous]

any solution yet on this one? in solidworks, we get nice clean closed corners. Recently switched to Fusion360.

[TheCADWhisperer]

---

@Anonymous wrote:

in solidworks, we get nice clean closed corners.

---

Autodesk Inventor Professional is the Autodesk product equivalent of SolidWorks and has a more developed (pun intended) sheet metal environment.

If you run into an issue that you can't solve in Fusin 360 - Attach your file here (and SWx example if possible).

(Start a new thread with links to this thread and the other thread where it appears that you asked the same/similar question.)