UPDATE 2/12/17. This part was used in the Ghostbusters Station 6 fan film. Check it out on youtube at https://www.youtube.com/watch?v=RHMUsQqLmRg

This is the sloping part of the Ghostbuster's proton pack booster from
Steffan Ottos' plans at:
http://www.gbfans.com/wiki/Stefan_Otto%27s_Prop_Plans
Use in conjunction with:
http://www.thingiverse.com/thing:518252
The axis for the tube is printed orthogonally to the print plain. This is
because the two cylinders on the top of the part cannot be printed it
positioned any other way. Some post print cleaning will be required.