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jloppnow

Papercrete Garden Sculptures

jloppnow
18 years ago

Hi folks,

Been a long time lurker... wanted to post about papercrete for sculpting. My art page is at http://members.cox.net/jlopp/art/ . Just click on the pictures for larger views. The piece I am most proud of is at the bottom of that page or he can be viewed directly here:

http://members.cox.net/jlopp/art/greenman.JPG

All pieces are made from a mix of paper fiber, Portland cement and a bit of joint compound. I put the mix over an armature of styrofoam usually, theough my Greenman piece also required pvc piping for arms and legs.

As to life expectancy with papercrete... My lion has overwintered only once and was never sealed. He has minor crackling but not major structural flaws.

The Greenman is life size. He is painted with enamel paints sponged on, then handpainted with acrylics, then sealed with polyurethane. We shall see how long he lasts. He sits in the woods of a private camp in Arkansas now.

I, of course, have never taken pictures of the entire process. I usually use about 2 parts cement (NOT premixed concrete but pure cement) to 1 part paper to get a stronger smoother surface, for bulk I will add more paper but I like the outer shell to have an higher concentration of cement. For paper I just buy the paper fibre they use for insulation in your attic, though to be more ecological I should shred and recycle my own newspaper.

sincerely - Jonathan R. Loppnow

Here is a link that might be useful: Jonathan's Sculpture Page

Comments (14)

  • Happy_Go_Lucky_Gayle
    18 years ago
    last modified: 9 years ago

    You should consider working for the Renaissance Festivals building their structures. As you know We love Greenman. Great Job.

    I do the Renaissance Festivals.

  • tufaenough
    18 years ago
    last modified: 9 years ago

    WOW!
    Great stuff. Your greenman blows me away.
    I know a certain Redhead who is going to go gaga over your stuff.:)

  • mabeldingeldine_gw
    18 years ago
    last modified: 9 years ago

    Beautiful work!

    Mabel

  • dixiesmom
    18 years ago
    last modified: 9 years ago

    Oh! I just love gargoyles. Great work, thanks for sharing!

  • jloppnow
    Original Author
    18 years ago
    last modified: 9 years ago

    I had a request for my formula for papercrete so thought I'd post a copy here just in case it might be of help to someone.

    Cement and Paper Fiber Sculpting

    Materials

    Portland Cement (NOT a concrete mix just the cement powder)

    Paper Fibre (I buy the paper insultation you can get from Lowes. It is

    already shredded. You can take newspaper and shred it, soak it, mush it more

    but this saves a lot of work).

    Bucket of joint compound

    Mixture

    You have to experiment here to get it to the point it feels like clay. Off

    hand I'd say 2 parts paper fiber to 2 parts paper cement. I then just put in

    a handful of joint compound, add water and mix by hand. If it doesn't feel

    like clay I add more cement and more joint compound.

    You can do 3 parts paper to 1 part cement if you just want bulk and are not

    concerned about strength. The higher the paper fibre the longer it will take

    to dry.

    I just do this in a bucket. I've not tried a large scale mixing because a)

    you can get tired out pretty easily and then you are wasting the rest and b) I

    don't know if it would dry out too quickly.

    IMPORTANT!: Wear a mask and rubber gloves. Cement dust easily goes into the

    air and it is not a good idea to breathe it. Also, I wear thin rubber gloves.

    I much prefer no gloves as I like to feel my subject but the reality is that

    cement will suck all the moisture out of your hands.

    I've been asked if one can add sand. I've only tried this once. It makes the

    mixture a lot less claylike and takes longer to dry and will slump easier, but

    you can do it. The plus side is likely added strength.

    Armature

    I try to avoid anything that will rust as an armature because I just don't

    know if the paper fibres will wick water all the way through the sculpture.

    If it does it could cause rust on the armature thus splitting the sculpture.

    This may not happen at all. I would say though if using an iron armature to

    make sure to seal it with paint BEFORE applying the cement. This is probably

    a good idea with any type of cement mixture in any case.

    My armatures are made from styrofoam, pvc piping and aluminum piping. If it

    is a "sqaut" figure, meaning triangular or a column type figure I just use

    styrofoam but it won't have the stength necessary for limbs. So for my

    Greenman figure I used pvc piping. My gargoyles though have all just been

    styrofoam, including the one with wings. The wings were just the blue

    styrofoam sheeting you get for siding. The papercrete adds amazing strength.

    The Process

    BUILD A GOOD ARMATURE! Make sure that it is to the proportions you want

    before applying cement. I've had to do some chiseling because I didn't take

    into account the extra width added by the cement and threw a piece out of

    proportion. I know it's common sense but I don't always have common sense so

    thought I'd give the warning in case there is someone else like me out there.

    I coat the armature from the bottom up, when it is completely covered with one

    layer I let it set for a day IF it has things like "legs", such as with the

    greenman. I needed the strength there in the legs before I could build up the

    "musculature" with more cement. This technique worked great!

    Once you can start adding "muscles", and bulking up the figure you pretty

    quickly learn if you are adding too much at once so it slumps. Be patient.

    My experience with papercrete is that you can add additional layers after a

    piece is dry and it holds nicely. I've even gone back months later and done

    more work on a piece. I know this isn't conventional wisdom but it works for

    me.

    Make sure and cover the bottom of the armature as well with cement. You don't

    want bugs getting up inside your armature. It is said that carpenter ants

    love styrofoam.

    How long does it last?

    Short answer. I don't know. Papercrete houses have mostly been built in arid

    areas. And they advise not sealing the surface of a house too much so it can

    breathe... BUT you don't have to worry about that for a sculpture so SEAL

    AWAY. I use paint and polyurethane. I have one sculpture that has sat

    unsealed for at least one winter. He has minor surface crackling but no

    stuctural damage. I think that my sculptures will last my lifetime, but I

    don't know. Still, do any of us know how long our art will last outdoors

    anyway? When I sculpt a piece I do try to think about how water might pool

    on it and try to make it so water will run off as much as possible. Ice in

    crevices can be deadly to cement pieces. But paper fibres give a lot of

    strength to a piece. I am always amazed how I can coat a piece of styrofoam

    with this mixture and once it is dry I can stand on it with no damage.

    Painting

    For my Greenman piece I used a sponge to paint with. This makes sure the

    figure gets well covered. I did an enamel base and then added acrylics for

    highlights. I used spray polyurethane but want to try the kind from a can

    sometime.

    You don't have to paint of course but I still think sealing is a good idea

    with polyurethane or something else.

    Here is a link that might be useful: Jonathan's Sculpture Page

  • rockhewer
    18 years ago
    last modified: 9 years ago

    Thanks for these super instructions. It's good to hear how things were done from the folks who actually did it. Remarkable pieces of sculpture too. Thanks again.

  • artfart
    18 years ago
    last modified: 9 years ago

    Jonathan,

    Welcome. Your sculpture is fabulous. I too love papercrete but have reservations about how durable it is. I left a frog outside all winter just to see what would happen, it still seems solid but it did get mouldy spots which actually made it look better. I don't know if the mould has weakened it.

    Thanks for sharing your work with us.

    Amy

  • tufaenough
    18 years ago
    last modified: 9 years ago

    Jonathan
    Your work is terrific.
    I've been messing with small items in papercrete and found that 00 dolomite sand works well to keep the putty like texture of the papercrete but also gives it a hard smooth shell when cured.
    Using a special S type Portland cement(used for stucco) gives a very creamy texture and increased work time for papercrete as well.
    Papercrete is a cool medium and I hope to do more with it once I can find a cheap supply of pulp.:)

  • jloppnow
    Original Author
    18 years ago
    last modified: 9 years ago

    Dear tufaenough,
    Thanks for the tip about the cement for stucco. I have never tried anything other than regular cement so I am very interested in your advice.

    Also, Amy, curious to know if your frog was sealed or not? The molding is likely due to the paper fibres holding the moisture. One thought that occurs to me, besides sealing with some type of waterproofing, is to use a higher concentration of cement in the mixture for the outer coating of the object.

  • tufaenough
    18 years ago
    last modified: 9 years ago

    Hi Jonathan
    I use a specialty type S from a company called LeHigh.
    It's used to make strong stucco.
    It's not expensive and has additional admix that make it terrific for armature work.
    It probably has some of the same properties you get from joint compound. You definitely must use gloves with this stuff. It contains a lot of lime.
    I've only done very small pieces however and only for a few months.
    I'm going to try a joint compound mix and see if I like that as well.

  • Old_hippy
    18 years ago
    last modified: 9 years ago

    Jonathan, your sculptures are fabulous! First time I ever heard of papercrete. Thanks for the instructions too. Going to have to put this one on the back burner.

    Keep up the good work.

  • tufaenough
    18 years ago
    last modified: 9 years ago

    Old hippy
    Papercrete is cool but it doesn't carve worth a darn!:)

  • artfart
    18 years ago
    last modified: 9 years ago

    Jonathan.

    No, the frog wasn't sealed. I did it without sealing to see what would happen because I read on one of the papercrete building sites that papercrete will become mouldy and eventually get soft and deteriorate if left in contact with wet soil.

    The frog sat on my deck rail all winter. Next winter I'm going to sit him on the ground all winter and see what happens.

    I'm sure you're right about the mould being from the paper fibers holding water.

    Amy

  • goldenskyhook
    8 years ago

    Great instructions, EXCEPT your proportions. What is a "part" of paper or cement? Is this by weight, or volume?

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