The file 'Laser Cut Flex Box Snap Fit – A Wooden Box with Living Hinge' is (svg) file type, size is 2.68 KB.
I copied the Flex Box, but didn't want to use glue.
So I changed the joints from side panels in the basic drawing. Now the box is 'snap fit' if you use 3mm plywood and a Trotec Laser cutter.