Evakool TMX65 / TMX50 Replacement Lid Latch (Heavy-Duty Opener)

If you own an Evakool TMX series portable fridge, you already know how difficult it can be to source factory replacement parts when the original lid hardware cracks or snaps.

I designed and engineered this heavy-duty replacement lid latch opener out of absolute necessity for my own setup. This isn't just a conceptual 3D model—it is the result of 3 design iterations to perfectly optimize the structural geometry and eliminate the stress concentration points found in the original factory plastic.

🚐 Real-World Durability Test

This final design has been subjected to a brutal, real-world torture test:

• Duration: Multiple years of continuous, full-time use.

• Environment: Installed inside a working camper van.

• Usage: The fridge is always on and in constant use, surviving everything from intensive multi-month touring trips to the rough handling of weekly mountain biking and water sports weekenders.

• The Result: Zero structural deformation, zero cracking, and zero creep.

🖨 Print Settings & Material

You don't need expensive, exotic engineering filaments to make this survive. My original prototype was printed entirely in standard PETG and has survived extreme vehicle cabin heat waves without an issue. This includes enduring multi-month summer trips tracking from Hobart up to Bundaberg, down through Victoria, across the Nullarbor, and all the way north to Carnarvon.

For maximum structural strength, I recommend the following slicer settings:

• Material: PETG (or ASA/ABS if preferred)

• Perimeters/Wall Loops: 4 to 5 minimum (Crucial to ensure the bolt holes and load-bearing columns are robust)

• Infill: 40% – 50% (Gyroid or Grid for high dynamic strength)

⚠ Don't own a 3D printer? No worries. You can still purchase and download this .stl file, then easily upload it to a commercial print-on-demand service (like Craftcloud, JawsTec, or a local hub) or hand it to a mate who prints. Because the design is structurally optimized, standard, budget-friendly PETG will do the job perfectly!

Licensed under Standard Digital File License (Personal Use Only). I am actively looking for partnerships with commercial 3D printing hubs to handle volume printing and local direct shipping—if you are an established print shop or hobbyist looking to license this design for retail sales, please contact me directly to discuss commercial terms.