Hi,

I'm trying to use the standard square spiral staircase model in a design, but it's cutting an unnecessary hole in the floor above where there is actually plenty of headroom.

I've got no experience with modelling tools (and don't have any right now), but I'm happy to hack about in the file if there's a way to remove (or shorten) the hole-making template in the design.

Is there any handy guide to the content of the .obj file format, or can anyone point me at which chunk of the file defines the cut-out parameters?

Thanks!

Matt.