Customizible Project Box Lid
thingiverse
Customizable project box lid. Extends down into the box about 5mm to provide lateral support for the otherwise (usually) flimsy upper part of the box. You can use the Thingiverse Customizer if you just need a blank solid top. Otherwise, I'd recommend downloading the SCAD file and editing as necessary to add your desired mounting holes. Note that the model is built with the top upwards (i.e., as it would sit on the box) so that you can more easily measure and position your holes. Make sure to flip it over for printing. Note the examples in the photos have had additional holes modeled into them.
With this file you will be able to print Customizible Project Box Lid with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Customizible Project Box Lid.