Hey, thanks for everybody's input. Especially the holo links.

What factors go into successful developing, that is, how can you avoid shrinkage? (no jokes necessary.... )

Is it temperature dependent, agitation, chemical, etc.? Lemme guess, all of the above! I wonder what the success rate is.

So here's a question... if you used mercury, would the shrinkage problem be minimized? Why must one use mercury? I guess it's because the mirror has to actually be in contact with the emulsion? So just sandwiching a mirror wouldn't work I suppose.

For what it's worth, making emulsions is way out of my league at the moment; I'll stick with the limitations of the available plates.

Lastly, could someone explain this sentence.... "The Slavich [PFG-03c] emulsion requires pre-development hardening in a formaldehyde solution." Is this the fogging that R Shaffer was referring to??

BTW: Lippmann plates can be projected, which to me seems like one of the most practical ways to display. It requires an aphengescope type projector (basically an opaque projector as far as I can tell). Here is a book link that describes it.... http://books.google.com/books?id=pqk...escope&f=false