Simple, yet smart Design that can be customized to your liking.
(See Sizes Below)

          There is a total of 3 slots for this Organizer. The 1st Slot on the Right Hand side is the smaller of the three. It can be used for pens, pencils, markers, paint brushes, drill bits, you name it.

          The 2nd and 3rd slots in the middle and left hand side can be easily designed to fit your needs. There are 2 inserts that are  already with this file. Each one having a different size in diameter of the holes. One is 11.75mm with a total of 6 slots available. The other one is 9mm with 12 slots available. 

           On the Back Side there are 3 available spots for magnets. I did 3 so you would have options just incase you decided to fill it with lead. You can use 1 magnet or all 3, totally up to you, my friend. (See Sizes Below)

Width- Left to Right
Height- Front to Back
Depth- Top to Bottom
-Width- -Height- -Depth-

Total Size of Organizer: 111.1mm x 65.35mm x 70mm

Size of Right Hand Slot: 21mm x 57.6mm x 68.2mm

Size of Middle and
Left Hand Slots: 41.75mm x 57.6mm x 68.2mm

Size of Magnets: 10mm x 30mm x 5mm
Rectangular

The main reason for designing this is to have better customization. Not just with the slot inserts but also in the placement of the organizer itself. You can stick it to your 3D printer for whatever you need it for or to the side of your truck and car when working under the hood. Slap this bad boy on the fridge to hold your pens and or chip clips or take it to the office for the desk.