focusing suggestions

[asmariglia]

Hi all, can anyone suggest me how to make a focusing screen system similar to a Phillips camera or chamonix, i was thinking that maybe I can use some cnc screws... trapezoidal nut with trapezoidal leadscrew spindle, I appreciate any suggestions, preferably cheap :)

[vinny]

Google Torqspline, identical stuff. I didn't see left handed in stainless so I ordered mine from chamonix. You don't need left handed but I wanted my new camera to match my 4x5 chamonix.
If you want identical rails/bearing blocks pm me for details.

[asmariglia]

Thank you vinny, they looks perfect although I have not got how can I lock the screw on one side and insert it in the other one ... the mobile zone that moves forward..... if I find other in Europe I hope to avoid an order from the States

[vinny]

send me an email and I'll send pics of how it all goes together.