Super Glue Flow Control Rings
thingiverse
Theoretically 2 of these would be adhered to the front and back of a tube style super glue and this would allow to pull the sides back out after squeezing glue out to stop the flow.
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With this file you will be able to print Super Glue Flow Control Rings with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Super Glue Flow Control Rings.