My cauls are raw wood. Unsealed wood allows a much faster moisture evacuation and a better glue-up, I hope. The downside is that extracting the mosaic is a bit of a chore, and I need to make new cauls every time 🙂

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s