Wet paper coating vs dry paper coating

di de · Dec 2, 2017

So far, I had only been coating on wet paper, so I tried to coat on dry paper.
I coat with a 4 mil coating rod (I know it's too thin but it's what I've got).

See comparison below, the dry coating is not uninteresting but...

These are contact lith prints from X-Ray negative

AgX · Dec 2, 2017

I find your thread title misleading.

di de · Dec 2, 2017

sorry, english is not my mother tongue, I don't exactly see what you mean... feel free to correct...

dwross · Dec 2, 2017

di de,

Your progress in papermaking is very impressive! I'm following your work with great interest. Thank you for posting here.

After years of frustration with dry paper coating, I devised the wet paper technique. It almost eliminates failures and it opens up the list of suitable papers. That said, I think you'd have a comparison more useful to yourself personally with a thicker coating on the dry paper. Which technique do you prefer?
d

dwross · Dec 2, 2017

AgX said:
I find your thread title misleading.

Hi AgX,
It may be that you are unfamiliar with the two paper coating techniques. I can't think of a better title for the thread, but can you offer a title that would be more meaningful to you? I'm not suggesting that di de change the title, but I'm always interested in how best to communicate about the various aspects of emulsion making.

AgX · Dec 2, 2017

Dry coating to me means dry-on-dry. But that is based on general engineering including photochemical engineering.
I was not aware that you used that term differently. I stand corrected by this.

Rick A · Dec 2, 2017

I would like to know which is the wet and which is the dry coated between the two samples.

Prof_Pixel · Dec 2, 2017

dwross said:
. I can't think of a better title for the thread, but can you offer a title that would be more meaningful to you?

Perhaps: Wet paper coating vs Dry paper coating

That would be more descriptive of what's being done.

di de · Dec 2, 2017

Prof_Pixel, you're right, done...

di de · Dec 2, 2017

Rick, left is wet paper, right is dry

di de · Dec 2, 2017

Denise, thank you
I was surprised and a bit worried how the dry paper curl instantly after coating... but it seemed to be ok...
The thickness I coat seemed not to be much a problem on wet paper but is clearly an issue on dry paper.
I think I will continue to coat on wet paper but keeping in mind that "dry paper effect" which can be useful with some images...
I have to find a glass tube in my neighbourhood to build a puddle pusher so I can adjust the thickness of my coating.

Wet paper coating vs dry paper coating

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