How do you remove oil based paint from a canvas?

I painted over a canvas as practice and would like to reuse it. How should I go about removing oil-based paint from my canvas.How do you remove oil based paint from a canvas?
You can't after it has dried. Paint over it. If it is still wet, you can remove it with lots of odorless mineral spirits, which is a paint thinner. It is a messy job. You should wear gloves. Outside, if possible. I have done it many times, but while I was working with the wet paint.How do you remove oil based paint from a canvas?
If the oil painting is recently dry (within a couple of months) you can use Acetone to remove it. Do this outside if possible using rubber gloves. I don't like painting on old dried canvases. First all oil paints are somewhat transparent even those that are considered opaque are still effected by colors below them and also there is the texture built up by the strokes below. I guess it depends on what you are painting, but anything with any detail will be effected by the texture..honestly if you are painting on cotton canvas it is pretty cheap. The stretchers are more expensive. Re-stretch with new canvas. Have fun!
actually it CAN be removed, though it may take a little time and some elbow grease and some patience. Lacquer thinner will do the trick...it may take several rags, and you have to be careful in disposing of them, for both materials are flamable.
Just let it dry thoroughly and paint over it. That's what the old masters used to do.

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