Simply apply some glue to the parts that will contact your model, and apply. The photos shown were quick mock-ups, hence the excess hot glue around the push bar. We would suggest something like super glue for a cleaner and more permanent installation.
This is a 3D-printed part, constructed from PLA. Certain parts may be fragile and require care when installing/assembling. Minor cleanup may be required.
*Seat is NOT Included!