Flat Pattern Align Error

[ecnels]

Hi All:

The enclosed file has a BoxExternal Sheet Metal Component.  I originally created this Component and converted it to Sheetmetal  with 1.87mm Radius.  A flat pattern was then created.  After changing the Sheet Metal Rule to use a 1.5mm bend radius, a flat pattern cannot now be generated (gives a Flat Pattern Align Error and no other explanation).  Even upon changing back the Radius to 1.87mm or larger, the error continues to occur.

What to do?

Thanks!

[TheCADWhisperer · Accepted solution]

Not even considering the Styles - Thickness,

your part is not uniform thickness as it is missing inside bend radii.

Even if Fusion could do zero radius bends - the minimum outside radius would have to be equal to the material thickness.  The inside bend radius is usually greater than zero - often equal to the thickness as a minimum.

[ecnels]

Great observation - Thanks, but here's a related question.  When selecting Bend Radius under a Sheet Metal Rule, is that an internal or an external radius?

The fact that I was able to create a flat pattern, BEFORE altering the 14 gauge Sheet Metal Rule from 1.87mm to 1.5mm seems odd?   Bug?

[TheCADWhisperer]

The Sheet Metal Rule - Bend Radius is the inside radius.

I think Fusion should have returned an error on you original Flat Pattern.  

Sounds like a bug to me.