Fluid Painting Coaster

This is my first attempt at pouring paint over four objects at the same time.  I found cheap sandstone coaster, shown below, at the Dollar General store and thought they would be perfect for my first attempt.

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I put a piece of parchment paper on the back of the coaster and taped the edges.

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I applied two coats of primer, and lightly sanded the coasters after the primer dried.  The holders were a stack of four craft sticks held together with the weaving loom rubber bands.

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I let my sister pick the colors.  She likes purple/blues with green accents.  Yes, I use cheap Walmart brand bags, the ones that are almost impossible to get open, to let the paint drip on.

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Lastly, it came time to put resin over the coasters.  These are the tips I learned while researching how to apply resin (because I have never been very successful):

  1. Clean the painting of any oily substance.  I let the coaster dry for at least a week, then sprayed the coaster with a mixture of Dawn and water.  I let them sit for a minute and gently wiped them off with a paper towel and let dry for another week.
  2. Seal the painting, because canvas breath and can cause air bubbles in the resin.  I seal the coasters with polyurethane and let dry for another week.
  3. Pour resin in temperatures above 70 degrees.
  4. Use torch to remove bubbles.
  5. Cover the work with a box while it dries.

I mixed and poured the resin over the coasters, spread it out with a plastic paint scraper, and removed the air bubble with a heat gun.  Yes, I know a torch is recommended.  But, while researching torches I scared me that I may burn down the house if the torch did not fully extinguish.  So, I was very carefully to keep the heat gun cord and my hair out of the resin.  The coasters were covered and let dry for 24 hours.

The results:

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