Assemblable pen holder! Mechanical puzzle with pistons and gears!

Assembly spoiler video: https://youtube.com/shorts/CEtuKXeiGJ8 Assemblable pen holder.Mechanical puzzle with pistons and gears.Easy to print, easy to assemble!No glue + no support + PLA = eco-friendly!! Why should you choose that pen holder?1- Easy to print.2- Easy to assemble and disassemble.3- Educational: Have you ever assembled a crankshaft mechanism?4- Eco-friendly: No glue required!5- Carefully designed to avoid waste: No need for supports!6- Anti-stress: Turn the knob when you feel bored…

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