Re: Sorry & oilprint help
I have used litho varnish and plain oil paint - litho varnish can be added to oil paint to stiffen it. I had some success with it - but shortly after this I had to dismantle my darkroom in order to repair my basement. Litho varnish comes in a variety of thickness stiffness - I used a number 8 from Graphic Chemical and Ink I use weber Turpenoid natural to clean. Its a synthetic turpentine that is non-toxix. Without this I couldn't consider doing oil print I'm now working on putting my darkroom back together. I may be printing again in a couple weeks :) Gord davidhatton@totalise.co.uk wrote: > > Hi Henk, > > Thanks for replying. I'm going to order some litho ink as you suggest. > I'll try again when it arrives and I'll get back to you with the > results if I may? Once again, thank you > > Regards > > David H > > > On Oct 10 2008, henk thijs wrote: > > .... since two days al my msg's to the list were bouncing; so i > contact my server and hope it is ok now... > > > David, > Normal oil paint is really not the way to go; litho-etching ink is > harder (and i have the impression less additives). > Even the litho-ink is not stiff enough for me, i add pure pigments to > stiffen; also magnesium-carbonate can be used. > But, like gumprinting, parameters influencing the final result are > numerous. > Gelatine coating (it took me some time before deciding to stick to 3 > layers of 8 to 10 %.) > The potassium carbonate 6 %, coating until the paper is not taken > anymore and it takes a long time to dry. > The exposure, compared to gum it takes about 2 times as much (in my > case with an inkjet-plotter-foil neg.: for gum 600 to 700 seconds, > for oilprint about 1400 seconds) > The ink: if spread very thin on a tile or equivalent, go over it with > a foam roller, try on a sheet of normal paper, result must be a very > thin 'brayer-stroke'. > Before inking i dry the paper both sides, and wait a bit before > starting inking. > If ink is applied, spray a bit of water over it, and use a clean foam > roller to bring back the contrast. > Hope this helps. > If not, tell me what exactly goes wrong. > Succes, > Henk > >
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