Wall Mount Door Stopper

Boost MeIf you like this design, please give it a boost so more makers can discover and print it! 🚀

A durable and practical low-profile wall mount door stopper designed to protect walls and doors from impact. Perfect for outdoor setups, patios, or entryways where strong, weather-resistant functionality is needed. 

 

Easy to print and mount with a M6 flat washer (DIN 125) and standard screw. I used a Tapcon 24343 1/4" X 1-3/4" HEX Head Black Screw Anchor.  

Printed using Bambu TPU for AMS with modifier to add strength for the lower half.
 

Designed to use a 12 mm OD washer and a ¼" threaded diameter screw.

 

 

About Filament and Placement

The door stopper uses Bambu TPU for AMS, which has a shore hardness of 68D. I mounted them in a covered patio. Exposed to the moisture but not in sunlight. In moderate climates (e.g. partial sun, some humidity, moderate temperatures), a well-formulated TPU might last several years before significant degradation (loss of tensile strength, embrittlement) becomes problematic. No different than buying a retail manufactured cushioned door stop.

 

In harsher environments (strong sun, high UV index, high humidity, salt spray, temperatures cycling hot/cold daily), the usable lifetime might drop to a few months to a few years depending on how critical the mechanical properties are.

The first observed changes are likely discoloration, surface crazing or microcracking, stiffness increase, and gradual loss of elongation or toughness.

 

Bambu’s 68D spec is documented, but Bambu does not publish whether it’s polyester- or polyether-based; that choice meaningfully affects humidity/hydrolysis resistance (polyether better vs water; polyester often better vs solvents).

 

A black TPU pigmentation is a strong UV absorber and often extends outdoor life vs. light/clear colors.

 

If mounting this in direct sunlight, increase the wall loops by one and slightly decrease the infill and then sand prep and apply Flexible, UV-stable clear top-coat such as an aliphatic polyurethane or aliphatic polyurea clear (2K automotive/marine style, or pro floor clear) for UV stability + toughness.