Algodoo

"This mechanism converts rotational movement, trought crank to a linear movement, which uses two plates with grooves to make a rectangular movement
The metallic plate with groove is moved indirectly and it's inertia make this work"
This was my entry for project about "how to move nozzle of 3D metal printer in corners at same velocity, to get same coverage of material"
I tried making and interesting design, where I could move yellow circle in precise rectangular shape at constant velocity
My entry failed of course, do you have any better idea? Attach scene as response or comment below scene!