I was trying to attach an SLDPRT file to a posting when I discovered these limitations. I'm hoping that the ability to include .SLDASM, .SLDDRW, and .SLDPRT files in this list of supported file types for Questions, Ideas, and 3D/Photo/Video postings is currently being planned.

I see that .ZIP files are currently supported. Perhaps that can be a temporary workaround for the time being. IIRC, the current Jive-based forum also uses .ZIP files as its method to attach .SLD*** files? Someone please correct me if I'm mistaken.

Tagging @RP and @JB to get their valuable eyes on this. 👍👍​​​​​​​​​​​​​​

Thanks to @AV for bringing it to my attention.