This is a model of the Falk V-Class 157 size Horizontal Parallel Shaft Reducer. The model from Falk didn't have shafts or gears, so I generated them myself. It's roughly a 1:12 ratio. Most parts are 6 times too big. Scale everything EXCEPT THE WASHERS down by 1:6 (16.66%). Most parts will need to be rotated. The two oval cover plates are off by 2°Supports are required for some parts.
I made this in order to attach a Stanley shop vac to my planar. Couldn't seem to find this at the hardware store.Simple 2.5" to 1.25" Port / Hose reducer  byreaphavok  is licensed under the Creative Commons - Attribution - Share Alike  license. http://www.thingiverse.com/thing:596992 http://www.thingiverse.com/reaphavok http://creativecommons.org/licenses/by-sa/3.0/