Quote Originally Posted by garryl
What do you all use to sharpen those with- a Mobius strap?
A Mobius strap is the preferred method - but watch your fingers!

By the way, my amidol working developer sample was DEAD at 48 hours (base + fog only). It was still alive and working at 34 hours.

I took a look at the previously developed film (cross section) in an optical microscope. There appears to be a tanned "skin" at the top surface of the emulsion layer. The stain penetrates all the way to the bottom of the emulsion layer.

Recall that I uniformly exposed these pieces of film to a diffused halogen light source, so I would expect the development and stain to be uniform.