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What is a safe finish/sealer to use to make a set of decoupaged baby blocks drool-proof?

I have decided to make a set of wooden blocks for my son.  I'm using Mod-Podge to decoupage pictures and designs, along with acrylic paint on the blocks.

I know that Mod-Podge is water soluble, so it could make for a pretty gummy block after a 6 month old attacks it.  I'll need to make it water proof somehow. 

On reading a particular Instructable on these blocks, the author said to use a non-toxic acrylic sealer.  I could not find such a sealer (or none stated "non-toxic") at the craft-store. 
What is a safe brand or alternative to use?  OR. . . Mod-Podge aside,  what kind of method would YOU use to make these said set of baby-safe blocks?

I thank you, kindly!


Burf4 years ago
You can use either clear acrylic spray or polyurethane spray. Both are non-toxic once they have cured. I would give them 5-7 days to dry just to be certain they are completely cured and they will be safe for the young 'un then.
tobywankenobi (author)  Burf4 years ago
Well, that works for me!

Danke!
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