Preferably simple to build and with older parts because my school hasn’t gotten any new ones in 10 years
Just look up some online. In the Kepler electronics videos, you see him use older parts (new for their time) in the DR4B video is one of the “claw designs”. I understand that this lift is different, but figure it out. And I do not know if you have the power of air on your side (pneumatics) if so, then use it.
Just a bit of an erm actually—the ace bot is a continuous lift. sry
But yes, just slap some bent metal together and then gear it:)