Flexible Doorstop

thingiverse

Printed with TPU-95, this filament is specifically designed for use on solid wood doors, while other flex/semi-flex filaments like TPU, nylon, or flex PLAs may also work well. A good hit to a doorstop printed with TPU can cause approximately 1/8"-1/4" (3mm-6mm) deflection, but the top sphere absorbs most of the shock. These doorstops are crafted to match the original wooden doorstops found on colonial revival style houses from the early 1900s. While they resemble the originals from the side, the mounting method has been modified since hollowing out a wooden stop is not feasible for achieving the right stiffness and material savings. The doorstop stands at 2.75" (approximately 70mm) tall, with a pilot hole designed to accommodate a #8 wood screw (.175", or 4.45mm). Although metric wood screws may be available in other countries, metric machine screws are only accessible in the USA, making it difficult to determine suitable sizes. A #6 drywall screw was used instead, offering a large flat head relative to its shank size and fitting snugly into place. When installing the doorstop, ensure that the head diameter of the wood screw does not exceed the opening diameter of .35" (8.89mm). Avoid overtightening the screw, as it will only provide additional support when the door is unloaded; once loaded, the screw plays no significant role in holding the doorstop in place.