Was printing the locking bar, OBXblock1.stl when I relized that my hot end didn't need a cap with a filament guide. Brought it into SketchUp and removed the cap part. Also ended up removing the R3D logo because I couldn't get it to re-add the surfaces without causing bad meshes. Sorry. :( Anyways, for folks who have a bowden adapter on their J-head/E3D head that won't readily fit a cap, this version doesn't have the cap on top.