HO scale 66% slope chimney

This chimney is a detail part for an HO scale section house I am building.  It is designed to print in a single part that, with a quick twist, should shear into two parts - the piece below and the piece above the roof.  The lower portion has a 1/8" peg in the top that can protrude through the roof and allow the upper portion to be aligned perfectly.  

​The chimney is based on photos and drawings of a similar chimney used on the Hawks Avenue section house, which used to sit on the CPR mainline in Vancouver.