Hallo lovely folks :)

Does anyone know of a decent repository for public domain STEP files ? GrabCad is superb for most things, but I recall stumbling upon a site ages ago that had a phenomenal wealth of manufacturers step files. All brand name stuff, and all approved for usage by the manufacturers as well. I've been searching numerous times to find the site again and now I suspect I was just imagining it.

Does it ring a bell to anyone ?