Oh, I saw that. I like that people think of me when they see ray guns now.

Huh, didn't know that existed, thanks!

Or you can cut a spacer from wood like I did for the first version. Just be sure to check for cumulative error as you go.

The template is just a convenience if you happen to have a CNC router or laser cutter. Honestly, it would probably take you longer to make the template by hand than it would be just to mark the positions of the runners with a tape measure, based on the spacing given for your chosen cases.

The Stanleys are better quality and have stiffer lids. Tiny stuff can still mix sometimes, but it's not as bad. I put my labels inside the rear wall of each bin, which has worked well.