>>3394006Not him, but the expense on those is why I've been looking into making my own. I even have lots of old printers that I can source stuff from to do it, but I think I'll go with making a manual one instead. I have a cheap geared 4-way rail I'm currently using, but would like a screw-drive type that allows finer movements. Because of the gearing and razor thin DOF, I can't always get perfect alignment between shots. So, my focus stacking can end up like this even after hand editing some of it to fix auto-errors (pic).
With the right threading for a screw-drive I can get down to micron level precision without much expense. All it needs is a threaded rod and high gear ratio for the knob. I'm basing my design on the WeMacro macro rail ($250) which does 1 micron steps. Their gallery has photos down to 40:1 magnification using a Nikon microscope objective.
>pic resized, not cropped 