This is my take on an E3D V6 nozzle case. I took a look at a bunch of other models of nozzle cases on Printables and none of them really fit my bill:

• Tight Fitment
• No support
• Easy to print
• Full coverage on the sides and not too much leakage
• Easy to slide in and out 
• Doesn't need to screw in 
  • Nozzles should be able to slide in and out without worrying about threads which can be difficult to print

I designed this case with these requirements in mind, starting with dealing with fitment. I found that some of the sliding rails in other models can be fairly difficult to print as they are direct overhangs, despite being small. Instead, I did a 60 degree outwards slope followed by an inverse 60 degree inwards slope to make a very easily printable sliding rail.

I also combatted the slop in most other “remixed” case models by designing the case to be direct fit with a 0.2mm tolerance between the cover and the main body. This was fairly robust and tight from my testing, so I added a finger slide strip on the bottom of the cover to easily slide out the body with a push.

Also, was not a fan of the open design so I made the back entirely enclosed.

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This was designed to fit nine (9) E3D V6 nozzles with a 5mm nozzle head size (perfect for SliceEngineering Vanadium nozzles, that I use exclusively), but I can easily release additional models with higher headroom. I found these SliceEngineering Vanadium to be just the right size for these, with about a 0.2mm headroom on top.

Print Settings from my tests

• Raise3D E2
• Unreleased PLA+ Black [own brand]
• 0.6mm nozzle size
• 0.66mm extrusion width
• 0.25mm layer height
• Special Concerns
  • I recommend dialing in your z-offset for your first layer on the main body very well. Because this is a sliding fit, any elephant's foot will cause major fitment problems. Alternatively, turn on elephant's foot compensation to -0.2mm on contours P

Print Orientation

• Print the main body with the rails pointing upwards and the large flat surface touching the build plate. The holes should be open from the top
• Print the cover with the opening towards the sky

Specifications

• Nozzle Support: E3D V6 (M6 threads), 9 total
  • Note: Hole size was enlarged to 6.2mm to account for even shrinking filaments
• Headroom (from shoulder to tip): 5mm
• Threading: None
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