I made this 6:1 scale model of the nozzle to hold my spare nozzles for my Ender-3 V3 SE, (Also Ender-5 S1, Ender-7 and anyone with the Spider 1.0 hotend Kit). The model is made as closely as possible to the original with a few tweaks to be the best holder for your nozzles!
Do you have a one of a kind nozzle at 0.42mm, or did I forget your go-to nozzle size, fear not!
Just load up the included .f3d file in Autodesk Fusion 360, you only need to change one parameter for the upper part to adjust according to your needs, BUT you might need a plugin for the parametric text to work.
ParametricText plugin
Search the web for “fusion 360 parametric text”, follow along with the installation.

Parameters
You find the parameters in the “Modify” dropdown in the toolbar, then select “Change parameter” in the bottom. Then change the value in the “Expression” column, click “OK” and the model updates after a few seconds, export a new .stl file and happy printing

The lower part is interchangeable between the upper parts.
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The upper part has the nozzle size debossed on three sides of the hex nut, the opening in the nozzle is also changed according to the size. Pick the fitting .stl for your specific size, or look above for how to customize it.
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Model is optimized for printing, so no need for supports or brims.
| Material | Any material should be fine, I used PETG |
| Nozzle | 0.4mm or smaller |
| Layer height | 0.2mm |
| Perimeters | 3 |
| Shell | Top: 4 Bottom: 3 |
| Infill | Recommend 30% for the weight and feel Any infill should work. |
| Ironing | For PLA, maybe. I didn't think it was worth it for PETG |
| Skirt/brim | No |
| Support | No |
| Speed | Medium to fast, nothing too complicated in the model |
| Options | I had great success with enabling: “Avoid crossing perimeters” “Automatic infill combination” |
The author marked this model as their own original creation.