A lego interpretation of a 3 pendulums harmonograph drawing machine.
My first attemp to create a lego gun, a crossbow with magazine.
A 5 reels fast lego braiding machine, with pro-building instructions !
A switchless pneumatic engine mounted in a steam machine design.
A working lego microscope using a water drop, with dual light with down shutter.
A mechanical calculator, which is capable to add and substrat, featured carry mechanism, keyboard, overflow mechanism and openable part for set up.
Here is the third part on my mechanical calculator machine, focused on overflow mechanism and how to make substraction.