This is a 8 slot hot end holder with pre named slots. It is screw mountable or you could glue magnets to the back if you wanted to. I painted the top of the numbers in orange but you can change that to any color or just leave white in slicer. The hot ends slide in nice and stay in place.

I printed a few models on here and the quality just didn't seem like it would last in the real world. So, I made this. Slightly beefier than other models and has 2 screws to keep it together. No hinges!! It would take A LOT to make this break. You would need to buy the screws. (M5 8mm) I used stainless steel pan heads. I made this with white PLA which seems like it will do very well but might consider PETG because of environment it will be in. Let me know what you think. Happy Printing!

This is a FAST 28 minute print! I built this for the rectangle Hydrometer from Amazon. The hydrometer simply pushes into place in the holder and stays there. I DID NOT make the print cover the bottom of the container because that is where all the added filament and print time are added. Once filament spool is in box the hydrometer stays in place. You can add a couple drops of super glue to the bottom so it doesn't move at all. Happy printing everyone!