HO/OO RWS Works Unit/Mail Coach chassis Bachmann

These chassis are intended for my "HO/OO RWS Works Unit/Mail Coach Shell v1 & v2" products.  These products are based off of the Works Unit Coaches/Mail Vans utilized in the Railway Series books, most notably in the story "Mind that Bike!"   The differences between the Bachmann and Chain iterations of this product are that the Bachmann iteration includes the international Hook & Loop coupling with hooks, while the chain version is intended for the more realistic 3 Chain and Hook system.  This product will need 4 wheelsets of HO scale 33' wheels and a size #4 screw with the associated Hex nut in order to get rolling.  The hex nut will fit in the hex shaped hole on the underside of the chassis and will require glue to stay in place.  The screw will then go through the hole in the bogie and screw into the hex nut attached to the chassis.  Links to the shells and information about Hex screws and nuts will be included below:

Link to information about machine screws and hex nuts:
 https://www.fastenermart.com/machine-screw-nuts.html

Links to shells:
https://www.shapeways.com/product/GYWKQ6G4Z/ho-oo-rws-works-unit-mail-coach-shell-v1
https://www.shapeways.com/product/M9FQADX8E/ho-oo-rws-works-unit-mail-coach-shell-v2