Simple pump experiment/educational kit

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This is an exciting kit for experimenting, offering fun and educational experiences for both kids and adults alike. To get started, you'll need two plastic bb:s (specifically designed for soft air-guns, measuring 6 mm in diameter) and a piece of PVC pipe with inner dimensions of 17 mm and outer dimensions of 20mm. Additionally, you'll require an 8 mm dowel and tubing with an internal diameter of 8 mm. Two suitable O-rings are needed for the piston, along with some grease and hot-glue to secure the pipe's bottom and top. Take a look at the provided pictures - they will give you a clearer understanding of what's involved. The source files (FreeCAD) have been included, allowing you to modify dimensions according to your specific needs and available materials. In our case, we used cable ties to prevent any potential leaks.