Petri art coaster: create colourful coasters and impress your friends!

Close up of Resin Petri Art

Petri Art combines resin with alcohol inks to create three dimensional splashes of colour with unpredictable results.

It’s not essential to use the Pinãta alcohol inks, but we much prefer them due to the richness of their colour and superior lightfast qualities. Make sure you include the Blanco Blanco white to get the proper petri effects.

These fabulous coasters are so simple yet stunning that you’ll want to make lots in different colours!

Instructions (see below for images)

  1. Mix up 15ml of Resin8 Heat Resistant Resin as per the instructions (10ml resin and 5 ml hardener) and pour it into your mould. You can use a heat gun to get rid of bubbles. Allow this clear layer to at least partially if not fully cure. This can take up to 24 hours but you’ll probably find it is ready in 12 hours (especially if you keep it in a warm place and warm the resin first). Having a clear layer of this special resin on what will be the top of your coaster will ensure it’s properly protected against the heat of a hot coffee or hot chocolate!
  2. When the resin has partially or fully cured, mix up 30ml of the same resin (20ml resin and 10ml hardener) and fill your mould to the top. You can give it a gentle blast with a heat gun if bubbles appear. Give the bottle of Pinãta Blanco Blanco (white) alcohol ink a good shake before adding a few drops randomly into the mould.
  3. Quickly add a drop of Calabaza Orange ink inside each white blob.
  4. Add another drop of Blanco Blanco to the inside of each blob.
  5. Add a drop of Señorita Magenta (pink) to each blob.
  6. Give the Rich Gold bottle a good shake before adding a drop to each blob. You will see the gold fizzle and then appear solid on the top.
  7. Be careful not to add too much alcohol ink as it will affect the resin cure and could mean your coaster doesn’t set properly!
  8. Leave the coaster to cure somewhere flat, warm and dust-free.
  9. After 24 hours, carefully remove your coaster from the mould. It will take a further seven days for your coaster to be fully heat resistant.

For more about petri art, read our previous blog.


Thanks to Tali from @tallulahdoesthehula for writing this blog post.

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