Trapdoor hinge
thingiverse
This hinge is engineered specifically for trapdoors or cellar doors. It enables a seamless flush with the floor, requiring minimal clearance around it while still allowing for effortless opening and closing. The STL files are unlikely to be very useful; however, they can be viewed at .x_t Animation: https://www.youtube.com/watch?v=KpsRPT7j6Bc https://www.youtube.com/watch?v=vNUF3juJ4NM
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