If the plywood is for an indoor craft project: Water base enamel. For outdoors: Oil base with UV inhibitors Key is using the proper base or primer or undercoating. Follow paint manufacturer's recommendation.
Oil paint is paint with an oil base. It cannot be removed with water, only turpentine or paint thinner will get rid of it.
If the base coat used in your project is water base then yes, you bet you can. If there is any chance that the base coat used was an oil base paint then you cannot paint directly over it. The acrylic enamel will not adhere to the oil base paint and will begin to peel off as soon as it is dry. In which case a coat of primer is in order.
You can always paint latex ( water based )over an oil based paint as the latex just dries on the surface. However don't paint an oil based over a latex paint. Oil based paints need to absorb into the wood or other surfaces or it will just dry and flake off. For more information on the differences and when or not to use a latex or oil paint please see the following article. . http://www.ehow.com/how_4713170_between-latex-oil-base-paint.html
Solvent based.
If the plywood is for an indoor craft project: Water base enamel. For outdoors: Oil base with UV inhibitors Key is using the proper base or primer or undercoating. Follow paint manufacturer's recommendation.
You need to rough up the surface of the oil paint with sand paper or a light coat of stripper.
can i use water base paint over oil base paint
Yes. Clean and degloss the oil based paint, apply an oil based primer, then apply the water based paint.
Yes, you can
no it will peel. must use water base with water base & oil base with oil base.and use an undercoat to hide stains.
Yes, you can,
No, you can't .
No. It will turn into an unusable sludge.
Any paint that has the word 'acrylic' in the title is usually water based.
Oil paint is paint with an oil base. It cannot be removed with water, only turpentine or paint thinner will get rid of it.
That usually works quite well.