The third servo cannot support the entire arm

[starjokers]

Hi, thanks so much for sharing this low-cost project.
After assembling this 6-axis robotic arm, I found that the third servo lacks sufficient strength when controlling the arm, and it often errors out after a short period of operation. Is there any solution to this issue?
Thank you!

[Qu3tzal]

It doesn't hold the arm in the right position? Is it a holding torque issue?

[starjokers]

Maybe，it would not work after few operation. We should upluge the power to recovery it.