Last year I had painted some bridge supports and decided to try to weather it a little bit by applying weathering chalks over the enamel paint and at the time I liked it, but I've decided to go a different direction based on my dressels. Therefore, I'm wondering what I can use on the chalk to remove it. So that I can paint a different color over it is water enough or do I need to do something else?Has anybody ever dealt with this?
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Is it sealed in with dullcoat? If yes, then nothing. Paint over it.
The problem with trying to remove it is that its not all going to come off, and if you try to just wipe it, it's going to come back as streaks and settlement into the crevices.
If you have the ability to remove these pieces and soak them while scrubbing, that would probably be best. I still doubt its going to come out of every nook and cranny.
Depending on what you mean by "chalk" some of those weathering chalk products will "set" over time and become very hard to remove. It may take alcohol if the substrate can handle it. It may take the paint off with it.
If nothing works, spray it with dullcoat to seal it all in, then paint over it with a new base color. The dullcoat will prevent the new paint from flaking off of loose chalk underneath it.
I would take a small pipette of water (or perhaps a large soft paintbrush) and a bowl and hold it under where the chalk is and try and rinse it off. Pick a spot that isn't the most visible to experiment with. It might not work, but you haven't really lost anything by trying.
Before resorting to water, I would try the following:
1) Wiping with a microfiber cloth
2) Try a vacuum cleaner with an appropriate attachment
3) A magic eraser
If you do have to go with a water wash, I would recommend adding a small amount of mild detergent to the water. As always, start with an inconspicuous area.
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