A Simple Elevator

[nnfuller]

After graduating I took some time off from robotics, however I will be home over winter break and will be helping mentor my team during their design phase. Over the years I have helped build many robots and systems, but I have never built a elevator/lift. My team is very capable but do not have access to high precision work. They have a small mill and a team member has his own lathe. What would the CD community suggest as a method for building a lift that would have been competitive in the 2011 game? Basically I do not think they have the machining ability to build 254/1114esque lift, however it would be nice to have a solution in my back pocket in case their early designs seek out something like this.

Thank you for your time.