Re: [papercreters] new member

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SC

Spaceman <Spaceman@starship-enterprises.net> wrote:

Welcome to the group.

1. Papercrete is absorbent like a sponge unless you seal it after it is cured.
2. Freeze/Thaw doesn't bother papercrete after it cures.
3. You can form papercrete over a negative mold as long as you remove it once it becomes firm enough. It does shrink while curing (depending on formula used), so might crack if left on the mold.
4. Recipes vary according to the use. A basic recipe would be 2:1 paper to cement by weight, and lots of water to mix. The water drains away leaving the cement in the paper fibers. There is a database of recipes (a work in progress) at http://papercreters.net
5. Throw a bucket of latex paint into the mix. That'll seal it. Recycle your drain water into the next batch. Other sealants used include silicon caulk dissolved in turpentine, asphalt emulsion, deck seal, elastomeric paint. The AE is mixed in like the latex, the others applied after curing.
6. Days to weeks, or even months depending on your climate, temperature, humidity, airflow, and of course thickness.
7. Wet papercrete works a lot like clay. Staining is no problem, it's paper after all.

Papercrete is just a fraction of the weight of concrete, depending on the exact formula used. Send us pictures of your experiments  : )

       Spaceman    All opinions expressed or implied  are subject to change without notice  upon receipt of new facts.      mad4glass wrote:

Hi everybody,      1.Is papercrete absorbent after curing (a most important issue for   mosaicists!).  2. Can  papercrete resist the elements in a climate with hot summers   and cold winters (freeze/thaw cycle)? If not, are there any proper   sealants you can recommend me for use? (Not an issue in my current   project).  3. Can I form papercrete over a negative mold (well prepared with a   release agent of course)?  4. I need recipes/mixes for my project in planning. Anyone there who   can help me?  5. Can you recommend the use of latex/acrylic admixes as a fortifier   or are these a no-no in papercrete?  6. Approximate time of curing (depending on thickness and wetness of   course)?  7. Surface treatment - like "wet carving", staining,...?      

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