Yeah I think you need to make it lighter?

Using the mechanical advantage for this would be for someone pulling on the rope to be able to lift a weight easier.

Your pen is the one pulling and counterweight is the weight, so you would need more counter weight or lighter weights on the pin. But too light would have its own tensions problems….

Smaller counterweight may work as well. Can take or add to either side of the equation.

Likely number 2 would be enough, would double the distance itself. You just need to attach it to the same corner bracket and have a pulley with the weight under it.

Using #4 would allow you to move the pen 40cm for every 10cm of counterweight travel.

You can use multiple pulleys and shackles to take the distance of the rope up.

It’s how they do it inside of machines as far as I’ve seen.

Would a block and tackle solve that problem? Could 3d print them likely.

deleted by creator