Hinge design

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Hi, can anyone show me a reference or idea on how to design a hinge under the covers ?

This is just a normal cover for a tank but I really need to know how to apply the hinge under the covers

Cause normally we just put the hinge on top of it but now I need it under the covers :banghead:, I just need the idea to visualise it

TQVM

If you have 3D CAD just invert the hinge concept to the inside... For a visual aid search the internet for "Aircraft access panel hinge" and choose images result.

look at the cover over the fuel fill on cars.