Dual tool for 1.5 mL centrifuge tubes

It is the design for a dual tool for 1.5 mL centrifuge tubes (also called 1.5 mL tubes): a tube opener on one side and a part to close them, on the other side. It is quite fast to print (around 9 min) and it does not need printing supports.

For more strength, it is better to print it in PETG filament, with more walls and a higher percent of infill.