Hi, The export of PCB as 3D obj file, does not generate correct obj fileformat. I export this PCB (section of PCB shown)  And get this.  Some of the problems I mention here, but there are many other small obscure errors in the output: * The USB connector at top of the piggyback has a long pointy thing going backwards. * The 8 Molex plug in the foreground is completely messed up on the pins side. * The DIP switch is weirdly cut off and one corner and the front is invalidated. * The piggyback PCB is hollow, ie. the sides are not shown. The obj file is beyond repair with these errors. I guess this happens in the export, as the imported components all look perfect in their source format, and the EasyEDA 3D view of the PCB is also perfect. While you are at it, please export the material file as well. Thanks