How to convert the .3D file to another step or other format to open it with solidworks?

I just received a .3d file from a customer but I can't open it with  solidworks.

So I'm looking for a way to turn it into a step

 

Thank you

Hello

Just for the record, are you sure of the extension.3D?

Have you tried to rename it to .3ds?

A+

 

Hello

Why not ask him for a WWTP or STL? These are universal formats.

1 Like

Yes, I tried to rename but it doesn't work.