need help with flatten feature in solidworks

Hi,

I'm trying to make a sheet metal part with 4 simple bends in it. The
part is finished and now I'm trying to flatten the part so it can be
manufactured. I run into problems with this. Two of the bends that
were made using the sketched bend feature unfold but the two bends
that I made using the edge flange feature do not unfold. Does anyone
know what the problem is or how this can be fixed?

Thanks,
Melissa

 

Send me a copy and I will look at it.

The most common failure reason is due to a cut or something that changes the
distance across an edge to make it other than the material thickness. Look
at anything that crosses those edge flanges and if necessary, turn on the
normal cut option.

I also advocate the use of the flatten button on the toolbar after you add
each major feature. That way you know right then and there if you just
added something that kills the flatten ability.

WT

 

Also, check your bend allowance or K factor if the problem bends aren't
90 degrees. JS