Metal Sheet - bend corner - not centered

[mobil.scharf]

Hi,

What I want to achieve is actually quite simple:

I want to bend a metal sheet in a way to create a closed corner like B in this picture:

However, for some reason this doesn't work.

I am quite new to Fusion360 so I might be just overlooking something, but I have already spent more than 12 hours on this and just can't get it done.

The main issue I think is that the Bend Line Position is not adjustable. Of the three options (start - center - end) only the start position is actually correct.

My understanding is that for start, the inner bend radius starts where the bend line is - which is correct.

My understanding is that for center, the bend is positioned in such a way that it is exactly in the center of the bend line. With a bend radius of 1mm and a sheet thickness of 1 mm (both can be confirmed nicely with the raster in the background), this should in my case be exactly the inside of the sheet so that the corners perfectly meet. Which is not the case.

My understanding is that for end, the bend is positioned in such a way that the bend ends where the bend line is positioned. Which is also not the case, as it ends even earlier and does not reach the bend line.

Could someone please explain why?

Many thanks!

[mobil.scharf]

If you want to check it out yourself, here is a link to a copy of the file:

https://a360.co/39HsXfK

[TheCADWhisperer]

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

[mobil.scharf]

Yes sure, please find the file attached.

Thank you!

[jhackney1972]

I do not feel you will ever get what you want using Bends.  Switch to Flanges and you can be the corner to look like your desired "B" condition.  Also you will notice you cannot do the flange on both side at the same time which is unfortunate.  If you desire the close off the second flange side, you will have to modify the extents of the fold and adjust the offset by a little less than the sheet metal thickness.  After you create your flanges, you can unfold them, add your detail work to the flange and then refold them.  My practice model is attached you can use to follow along with the Screencast.

[mobil.scharf]

Many thanks, yes that does work!

However, it is a lot of work, considering that I already had the 2d drawing ready and "just" needed to add the bends.

I now solved it with bends and a lot of fiddling with extruding the corners to result in the same overlap with a 0.001 gap.

Anyway, if I ever come into a similar situation, I'll just use Flange as you showed, that seems easier and quicker (though still by far not easy, as the details need to be added afterwards).

It seems like there is no convenient way, just a better way of fudging it 🙂

Thank you @jhackney1972 !