On Jan 29, 2006, at 10:26 AM, Katharine Thayer wrote:
>
> On Jan 29, 2006, at 7:54 AM, Tom Sobota wrote:
>
>
>> Interesting. Your rightmost test strip is equivalent to the
>> leftmost of mine, but the unexpected thing is that you got this
>> result sizing more.
>>
>
> To round out my comments of yesterday, I've uploaded one more test
> strip, to show what happened when I exposed the same mix of lamp
> black on the heavily sized paper longer and developed it longer As
> you can see, more exposure did reduce the stain on the over-sized
> paper, but 3X the exposure still stained more than the same mixture
> on normally sized paper, and the flaking and graining of the gum
> emulsion makes the paper unusable anyway. The other thing I thought
> was interesting was that on the more heavily sized paper, even with
> extra long exposure,
Sorry, here I meant extra-long development.
kt
Received on Sun Jan 29 13:22:13 2006
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