Simple parametric box and lid

This OpenSCAD file creates a box and a lid that respect a couple of aspects:

• rounded corners and edges favourable for certain printers
• lid with a friction fit
• inner dimension customisable
• wall thickness customisable (defaults to 2 mm)

The STLs are designed to hold a double AA battery holder with enough clearance to allow a KF2510 2-pin connector being pushed through the hole in the lid. See the photo. The connector in turn can hold a LED. (Always use a resistor and don't connect the LED directly to the battery!)