Re: Preparing Al sheets; other factors
Hi Rajul, thanks for the citation (<- if that's the correct term). 24 Mart 2009, Salı, 2:24 am tarihinde, Rajul yazmış: > Experience of a local artist who paints on PREPARED AL SHEETS: > > - sand the sheet with gritty sandpaper > - clean it thoroughly with rubbing alcohol > - brush-coat with diluted gesso > - to change white of gesso, add acrylic paint of choice to it before > coating > > (Sanding after gessoeing would destabilize the surface, leaving fine > dust on top of which would sit the gelatin! How can the emulsion hold > on to that?) I don't understand this; it that for aluminum sheets exclusively? Isn't sanding gesso (every layer or the last layer only, both ob canvas or panels) a standard practice in painting, for those who want a smooth surface for high detail work or portraits (with smooth tonal transitions)? BTW, my personal practice is to thoroughly brush the surface top-bottom-top, left-rigt-left and diagonally to get rid of dust before sizing... > ... > Loris, your idea of using fine activated carbon is interesting. Will > await your experience. Will to it as soon as I'm confident with the normal way ;) > As Keith suggests, it might be worth DILUTING THE PREPARED GESSO to > reduce its viscosity so brushing it on will not leave streaks. Yes, but that should be done carefully because of the risk of precipitating CaCO3 - if the viscosity/density isn't enough to hold the particles in emulsion... > ... > Pardon this long story but hope it answers some issues we have > encountered and raises more!! Thanks much. Regards, Loris.
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