U of S | Mailing List Archive | alt-photo-process-l | Re: Preparing Al sheets; other factors

Re: Preparing Al sheets; other factors

just an idea, but my first thought when hearing "weak beer" is to get rid of the carbonation before using it.
(the dictionary is not of real help here...) i mean, get rid of the bubbles before use.

in the bostick & sullivan forum seems to be a lot of talk about alu use and sizing too lately.
here's the link, if you haven't seen it yet:

i've got a question about silica:
i have some waterglass ( liquid). silica is powdered. but are those two things the same (more or less), only that one is liquid, the other on powdered? could i use waterglass instead of silica?


Loris Medici schrieb:
I asked to my chemicals supplier about waterglass; they have liquid form
(something around 20-30%)... Is the addition of NaOH strictly necessary?
Waterglass is already alkaline in solution. What's the purpose of adding
NaOH? Another question is about beer; with "weak beer", do you mean "low
alcohol content" or "clear/pale" (or both)?

Thanks again,

25 Mart 2009, Çarşamba, 12:45 pm tarihinde, Loris Medici yazmış:

Interesting... What is the color of the coating (first formula)?

If it's white then I can just use this with a sizing layer on top, to
print gum on aluminum sheets or sealed wood panels. Thanks much!

What was the liquid strength of Sodium Silicate you were using back then?
(Asking because probably I won't find this in liquid form, only powder or


25 Mart 2009, Çarşamba, 12:03 pm tarihinde, henk thijs yazmış:


Forgot to mention that the article can also be found on:



On 24 mrt 2009, at 22:52, Loris Medici wrote:

Thanks Henk, will look at PF#9...

24 Mart 2009, Salı, 6:11 pm tarihinde, henk thijs yazmı�:

Hi Loris et al,

Just a question:
did someone tried the 'old' method with the beer recipe?
I did when working with liquid light (SE2) to make bromoil prints on
aluminium, see PF#9.