Hộp cho SK60 DC Buck Converter

I got This box for an SK60 DC Buck Convert from AliExpress.  

This is my first attempt at printing something I created with OpenSCAD or any other CAD package. I tried FreeCAD and Fusion360, but they kept missing a step and wouldn't work right. As a software developer, I decided to give OpenSCAD a try.  I am still getting a feel for it, but I think I like it.

Some issues with this box:

1. The back wall is too thick
2. The width should be reduced slightly for a better fit or a raised area for the clip to catch on.  It doesn't fall out, but it's not tight, either.

Find the source on GitHub https://github.com/wa1gon/OpenSCAD