Waterproof Housing

Update 25. Jun. 2021: fixed bug with only the sides rounded; this is also default for better printing

Description:
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This is a parametric rectangular, waterproof housing made with openscad.
There are two files: housing.scad is the module which contains the logic and housing_example.scad is the file with the parameters.
Included is also an example file in stl format with an inner size of 75 x 130 x 25 mm. The images included are made from a modified version with already holes and a dovetail joint (https://www.thingiverse.com/thing:3148124).
To be waterproof, there must be a gasket in form of a rubber ring, which can be found in office supply stores. For the example the rubber ring should have a 1.5mm thickness and 396mm total length (better choose a little shorter).
You need 4 water resistant screws 3.0mm x 16mm for the example.

Printing information:
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Open the housing_example.scad in openscad. **Important**: preview doesn't show everyth