Greetings,
A decade and a half ago, when I first learned about papercrete, the
standard recipe was 70% paper, 20% sand and 10% Portland cement. We
made a small muffin size test batch in a blender and let it dry. To
test how useful it was, we ran a wire through it and hung it from the
ceiling. We then inserted a coarse thread wood screw and hung a one
gallon jug of water from the screw. Every time we walked by, we batted
the jug, trying to make the screw pull out. After six months, we took
it down. You could put the screw in and out by hand, but you couldn't
pull the screw out. It really sold me on the quality of papercrete for
building. I would not be worried about attaching shelves to well cured
walls, they should hold.
Bright Blessings,
Garth & Kim Travis
www.TheRoseColoredForest.com
Bedias, Texas
On 3/22/2012 8:00 PM, JUDITH WILLIAMS wrote:
> I did really well in getting the cement in my mix down to 1/2 bag per
> 200 gallon mix. Now that I am ready to hang a shelf I am worried it
> might be too heavy for the wall. The screws may pull out. I have been
> thinking of all sorts of different ways to make sure the shelf doesn't
> fall down. I even looked at some of those fancy fasteners but don't know
> what to buy. There are some that have a plastic part the goes into the
> hole first and some that have little wing thingies that stick out if you
> put them into drywall. I also thought I would glue a decorative piece of
> punched tin to the wall behind where the brackets will go. I just don't
> know, but I want that shelf up there soon. It's a 2x12 12 feet long to
> span an entire wall. I have 4 beautiful cast iron brackets to hold it up.
>
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