How can i stop bubbles when making resin coasters with dried flowers?

[Olivia.T]

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[NatalieS]

I’ve been trying to make a set of matching coasters using resin and some dried flowers, but I keep getting tiny bubbles trapped around the petals no matter how carefully I pour. I’m not sure if my resin is too thick, or if I should be treating the botanicals differently first.

[VioletG]

I used resin last time and kept getting micro bubbles around the petals. I think it was a bit thick, and the petals trapped air as they settled.

[Sofia.S]

Moisture from the flowers is a real culprit in my experience; I dried things longer and still saw little bubbles, so I’m not sure what’s next.

[DonaldT]

I wonder if the pour temperature matters; I poured into a cool mold and the bubbles showed up around delicate petals.

[GeorgeS]

I tried warming the mix very lightly and poking at the bubbles with a toothpick, and some cleared but more formed later.

[Brian43]

I skipped a step once and ended up with cloudy petals plus bubbles; maybe the key is letting the first layer cure a bit before adding blooms.

[RileyH]

Could it be moisture in the petals?

[Mark89]

I was thinking about the mold material for a moment, like maybe a tiny bit of dust got trapped, and then I remembered I once had better results when I changed molds and kept my workspace calmer.