Customizable Basic 18650 Tray/Holder

Saw several holders out there and wanted something a little simpler yet customizable.

Just a note: For the battery diameter i've used 18.4 for most batteries and 18.6 one off brand due to the wrapping so it didn't tear. Adjust it as needed. I suggest doing a test print by changing the row and column to 1. This way you don't waste a lot and it is a quick print.