NashVegas
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Sat Oct-29-05 01:36 PM
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Is there any reason not to pencil sketch directly on a canvas to be used for an oil painting? A curious mind wants to know.
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| Heidi
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Mon Oct-31-05 05:08 AM
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| 1. Yes, there's a good reason. |
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Over time, lead and graphite can migrate up through layers of oil paint to the surface of your painting. It's "safer" to sketch on canvas with chalk or charcoal, which will mix with the oil paint.
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| NashVegas
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Mon Oct-31-05 10:12 AM
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Too late. Thanks for the explanation, though.
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| Heidi
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Mon Oct-31-05 12:16 PM
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| 3. I'm sorry I didn't see and reply to your post sooner. |
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Edited on Mon Oct-31-05 12:17 PM by Heidi
However, it might be OK, if you isolated the graphite or lead with acrylic paint or a medium (like Liquin or something of that nature) before you began painting in oils. (I learned the hard way, too. Nothing worse than finishing a portrait, waiting six months to a year to varnish it, then having the original and imperfect sketch rising to the top.)
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| NashVegas
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Mon Oct-31-05 03:44 PM
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Edited on Mon Oct-31-05 03:44 PM by Crisco
The layer on top of the sketch was done w/a Galkyd medium, about 40% of the mix. I haven't done anything else to it yet.
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Tue Dec 23rd 2025, 09:35 AM
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