Nails don't work well but screws work great. You can saw it and paint it, it soaks up paint like it does water - like a sponge. I used to make panels over sized and then trim them to size after they were completely dry. Nowadays I know my mix well enough that I know how much larger to make forms so it shrinks to the size I need without trimming.
I find that papercrete works a lot like potter's clay at the right stage.
Interesting idea :) I have so much shredded paper to get rid of, that is what I will use otherwise I would have gone the hypertufa route, but I think papercrete will produce an exceptional product and is stronger than hypertufa (for stepping stones anyway); I've got a couple of forms built, now to catch my breath :) I read somewhere that papercrete can be painted, sawed, and nailed like wood can, might come in handy if true. When hypertufa gets "leather-hard" I can scrape edges to smooth and carve in designs. Does papercrete have a "leather-hard" stage?
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