Exporting to *.STEP from Rhino results in a file that is not readable for many manufacturers.
My current project involves bending sheetmetal. Manufacturers usually want a *.SLDPRT or *.STEP file. When the process is completely automated and you just upload a file, then it is *.STEP only - at least in my region. Rhino is generally a bad option when it comes to designing sheet metal parts. That’s why I also use Fusion360. In the current project though, the parts don’t have very tight tolerances, bending shortening (k-factor) can be neglected and they are rather simple overall. That’s why I wanted to use rhino and grasshopper for the current project - it’s by far my first choice.
This turned out to be problematic anyway. I have to submit STEP files, no other option. My grasshopper definition calculates the final part and it can even export to STEP, sounds nice, except there is a problem. STEP output from Rhino/Grasshopper isn’t usable because many manufacturers can’t read it. Where I upload the file, I get an error message.
I had this before in another project and different manufacturer where the process isn’t automated. Whatever STEP export option I chose, they always told me, “sorry we can’t read your file”. I had to use Solidworks back then. Later I got to know Fusion360 and used it instead of Solidworks.
I thought this time I would be able to make STEP work but it is still not possible, whatever I try. Now I have to export the flat DXF from grasshopper, import it into Fusion360 and there use the sheetmetal tools to recreate the bends. STEP export there works as expected - of course.
I know that STEP export actually does work with some manufacturers. There is one where the process is also automated and it accepts the STEP exported by rhino. Though this manufacturer is in some regards too limited for me which is why it is not an option for me.
This bug is known since a long time and many have complained about it but nothing has happened. I hope it will.