Re: Grounded Experimental Delta Printer

Hello Nicholas,


I believe the in your diagram the real levers are not r and R but the components of those distances that are parallel to the line that goes from the center of the line formed by the 2 force application points (center of the upper string) to the turning point. So, when the arm extends, that distance decreases, as does the torque at the turning point and then the force at the end of the arm, that by the way decreases as R increases.

So in theory, it should be easy to flex the arm in the extended position, but it would be increasingly difficult, as the lever would increase again. So, probably it will work as a way of auto-protection against unwanted flexing, probably springy.

And in the other side, closing the extended arm would requiere more force than closing an already-semi-closed arm (like in the second diagram). So, in less words, any movement is requieres less force the closer is the efective distance of the arm. Plase see the nex simplified diagram:



Well, you have the real device, you can experiment in the real world, but anyway, I believe it will work very fine.