Can TPU Lid Generator

This is a can lid customizer. Use one of the pre-build common can definitions or build your own.

I have included a bunch of pre-generated lsit

Customizable features:

• The size and depth attributes
• Custom Edges
• Custom Text
• Add a ring to hang the lid
• Import stl stencils to cut into the top of your lid
• Cutaway preview view to see the internal shapes of your lid.

All of the pre-built lids with images have the image at .4mm of depth… yes just two layers. TPU has porous attributes and the 2mm lid thickness of the pre-built images needs that 1.6mm of solid layers.

You can make custom lids with deeper lid cuts.

Print Instructions:

These pre-built lids are designed for TPU which takes more thickness for a good fit.
All lids have tested at .2mm layer with 4mm nozzle.
No supports are needed on any lid attributes, HOWEVER, if you do a custom lid with a stencil that has large cuts, it is recommended you enable the honeycomb pattern to support the large openings.

Some Can Sizes I found

75mm: The “common” can. vegetables, fruit, dog and much more
67.5mm: Soup cans
54.7mm: Tomato Paste
54mm: Soda and Beer Cans
59mm 22oz Tea or beer can
86mm: Cat food, tuna cans
66.4mm: Small cat cans

Generating your own lid

The openscad file has a list of pre-built size definitions you can pick, or select custom to enter your own.

An overview of the menu controls will be in the illustrations.

STENCILS

Stencils can be STL files. A good source should be cookie cutters or silhouettes under the assumption they have good mesh.

If you decide to do a stencil in openscad be aware it is very sensitive to open meshes. You can try to use a slicer or other product to fix open meshes OR… you can just cut your image into a blank cap in your slicer. One illustration shows you how to do that in Prusaslicer.

Imported stencils first have to be located if not centered. I the VIEW OPTIONS menu you can make the stencil visible, then use the xy scale and xy move to relocate it. Then turn the PREVIEW off.

Move you stencil on the Z axis until you determine where it cuts into the first layer. After that adjust it to the needed depth.