make construction for lens movement

[maddog_rvo]

Can anyone help me make a decent constuction for lens movement.

I want to make a construction like a OHP but the only thing i have is wood can anyone help me make a construction??

the thing is that i need to mount a lens and a mirror so that i can focus bij moving the lens up and down.

 

[dlharmon]

Thing about using some threaded rod and making a crank. I used this once before to move a platform for a tiny subject in front of a camera. The key to this is to fix a nut permanently on what you want to move and grind the threads off the ends of the rod and allow it to rotate. Just add a handle and crank it up and down.

Darrell Harmon