It turns out that some participants post .blend files, which are used by the popular Blender open-source 3D modeling system.

I 3D Printed My Own Dyson Attachments (and They Actually Work) ...

I love creating things on my 3D printer, but I’ve always hit a wall because I’m not an engineer and traditional 3D design software can be really tricky. In ...

(based on directX_blender by littleneo) A DirectX importer addon for Blender 2.7 Click "File," "User Preferences," "Add-ons" Click "Install add-on from file..." Choose the downloaded ...