Hi! I’ve recently completed a set of MDF circles with a combination of gouache and acrylic paint that I would like to seal and use as either coasters or pot rests/trivets. There are a lot of clear sealing sprays, so I’m wondering what would be my best bet for both waterproofing and heat resistance? Also, how long should I let them dry before applying the first coat and between coats? First time project, so all advice appreciated! Thank you in advance!
