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DTrain
54 posts |
#21932 2007-09-09 23:48 GMT |
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I did a small piece recently using spackle as an underpainting to give the surface a very heavy texture. It worked fine but is this a bad idea for a long term solution? As I begin to work larger could this turn into a problem (due to chipping, cracking, etc.)?
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BetterYou
28 posts |
#21933 2007-09-10 00:39 GMT |
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Here are some must-do's for this:
- use this on a solid support such as mdf, plywood, masonite, etc and not on canvas to reduce the possibility of cracking - should be sealed with a compatible sealant before applying paint to it, to discourage discolouration, chemical incompatibility or possibly over-absorption of the paint binder (Golden's GAC 100 recommended, note: gesso is not a sufficient sealant) Oil paint used on absorbent surfaces suffers when the linseed oil is absorbed into the surface, leaving pure pigment on top which has reverted to a powder. There are many products on the market that you can use for texture, especially for acrylics (such as coarse gels and heavy gels which you could mix with sand or other inert substances). |
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Piramidy
39 posts |
#21934 2007-09-10 01:42 GMT |
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spackle is not the best product for what you are looking to do, i use sculpting paste...it is thick like spackle but cures harder and does not chip easily, and paints and gold size do not break down on it.
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