This cover keeps wasps from drinking your beer before you do.

It takes labout 2 m of 1.75 mm filament and less than 30 min to print (on my printer at 0.3 mm layer height).

The cover fits standard aluminium beverage cans with 54 mm rim outer diameter (typically 0.33 liter and upwards). If necessary you may adapt the dimensions to your can by editing the enclosed .scad source file (see instructions below) e.g. for energy drink cans (typical dimensions included in the source file).

Inspired by
https://www.thingiverse.com/thing:5438844/files
but different solution.

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Update 31 August 2023:

Punching options included and source file extensively redesigned (thanks to 867 downloads so far for the previous versions). The cover is now much more robust.

Printing the "WASP GO HOME" without gaps between the letters may be a bit challenging. After many tries I succeeded with the following parameters in Simplify3D (see screenshots) for the first layer on my Craftbot Flow IDEX:

• Nozzle diameter 0.4 mm, extrusion width 0.3 mm, extrusion rate 100%, speed 50%
• Layer height 0.3 mm, 2 peripherals
• Additional z-offset of 0.15 mm (i.e. the nozzle is 0.45 mm above the print bed for the first layer)

Layers 2 and up (implemented by a separate Simplify3D-"Process") are normal:

• Extrusion width up to 0.5 mm, speed 100%
• Layer height 0.3 mm

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The .stl files are assuming an extrusion width of 0.5 mm or less, which you may adapt in the enclosed .scad file to your preferences. No need for any change if your extrusion width is 0.5 mm or less. Using higher extrusion widths without adapting the .stl file may lead to some single-extrusion walls.

Howto:

• Click the cover on top of your unopened beverage can with the can's handle inside the cover's V-shaped recess. Take the cover/can-combo along your journey.

• As soon as you are thirsty: Remove the cover, open the can by inserting the cover's opening lid under the can's handle and (important !) BEND THE CAN'S HANDLE SLIGHTLY UPWARDS. Reinstall the cover with the handle inside the cover's recess. The handle will turn with the cover.

• Rotate the cover to expose the can's mouthpiece, drink, then immediately rotate the cover to protect the can's mouthpiece from insects.

• Repeat several times.

• Do not forget to unmount the cover before disposing of the can (preferably by recycling)!

As always I include the OpenSCAD source files for you to adapt or improve:

• Download and install OpenSCAD from https://www.openscad.org
• Launch OpenSCAD and open the enclosed OpenSCAD source file (/File/Open).
• Amend the parameters at the top of the file and/or modify the source code.
• Save your changes (/File/Save).
• Render the design (/Design/Render).
• Export the rendered design e.g. as a .stl file (/File/Export/Export as STL).
• Slice and print.

See my other designs at
https://www.thingiverse.com/thinger13/designs