> Message text written by INTERNET:Bernard104@aol.com
> > I understand that Eric found platinum significantly faster with
> Starphire.
> I found cyanotype slightly faster. Gum is absolutely not faster, and
> often worser. Some formulas still print OK, but some don't. The ones
> giving me most trouble have an opaque black in them (Rowney jet black
> gouache). <
>
> I know Bernard was quoting.
>
> In general it is best not to over complicate things.
>
> Find something that works for you and stick to it until the light dawns and
> something better comes along.
>
> Flakiness arises in gum printing when the coating is too thick or if opaque
> colours are being used that do not allow the light to cause the required
> reaction.
>
> Solution: use a light that is designed for use with graphic materials. A
> high presure mercury lamp that peaks at the appropriate wavelengths is
> best. It may be somewhat slower than a blast of light from tubes but the
> analogy of cooking a roast applies; High heat cooks the outside quickly but
> leaves the inside uncooked. Slow even exposure at the right wavelength
> produces the results.
> It is also better to avoid trying to achieve more than 0.7 density range
> for one coating if you want good gradation.
>
> Gloy is one way of avoiding flakiness for those who can get it. It gives
> far more consistent results than gum arabic.. If you are having real
> problems with gum arabic, and you cannot get Gloy, try albumen instead.
> Incidentally 17 B gum gives consistently better results than the lighter
> lithographers gums for gum printing. N cc of cold water added to N g
> of white gum arabic powder and left to dissolve will give good results.
>
> As to glass quarter inch or 5 or 6 mm plate glass will give good results
> across the board.
>
> Terry King
>
> Terry king
Terry, you're playing with fire, at risk of undoing all the honors you
earned at Bath. If you resume, even at one supposed "remove", garbling,
distorting, misinterpreting and generally dumbing down my words into a
silly mishmash you can then "fix" with platitudes, shallow generalities
and self-congratulation -- not to mention error -- I will get angry.
PS to G, R & others: What did you expect?
Fondly,
Judy