Magnetic Latch

Created a model to hold open camping trailer access hatches. They were painted and clear coated for durability. They have lasted 4 years so far in all weather conditions without any sign of degradation. The magnet gets inserted at layer 53, using 3mm thick neodymium magnets. The ones I had used were 19mm diameter, however, MakerLab has 15 and 20. Not sure if the 20 would fit as the internal hole is 19.2 diameter, so I played it safe and recommended 15mm in the parts.