I plan to make raised gardens and numerous planters, etc, out of concrete.
I will be pouring mostly into plywood forms making the various slabs. Where my problem lies is adding the decorative bits that will imprint into the concrete face. I considered using sawdust and Titebond three but I can't scrounge up enough fine sawdust for the purpose. Paper mache would be great but I have to make it water proof. It needs to stick to the plywood through at less 12 poring. I doubt even oiling it would work. How to make paper mache waterproof?
And other suggestion appreciated but I would like to avoid commercial products.
Also anyone know of good books on the subject. I love the idea of creating with concrete.