Cheap 6x6 folder with slow shutter speeds for zone plate project

[Robburrito]

I don't know that you will find any "cheap" folders with speeds between 1/25 and B . . . most of the cheapies have very simple shutters.

[paulfish4570]

Thanks for the ZP info.

[Tomf2468]

Just a quick follow up for everyone that helped/posted. I have an Agfa Isolette with slow speeds coming from Ebay and a new zone plate coming from Pinhole Resource. Assuming the camera is as advertised, it was a real good deal. I think I ended up paying more for the zone plate than the camera!

Tom