Saturday, November 12, 2011

11. FOAM CARVING and COATING

FOAM CARVING
Working in foam is a great way to work large relatively inexpensively. Foam is easy to work with in comparison to wood or stone. Your final work will be light weight and easier to transport which is an added bonus. Although foam carving is primarily a subtractive process, if you choose to coat the foam you will add strength to the work and afford yourself the luxury of adding to the form and/or filling imperfections. After the work is coated it is possible to add a paint finish if desired.

There are many types of foam including polystyrene, polyurethane and Balsa foam. Balsa foam is very soft and easy to carve and is available at the Compleat Sculptor for a somewhat hefty price. I recommend Polystyrene (Pink or Blue) Insulation Boards. These boards are available at Home Depot in 1" x 2' x 8' or 2" x 4' x 8' size at building supply stores such as TW Perry 8519 CT ave Chevy Chase, MD 301-652-2600
 
Hot Wire Tool Sources:
-Hot Wire Foam Factory tools may be purchased from the Compleat Sculptor

Adhesives:
If you glue up multiple sheets DO NOT USE a glue that must air-dry such as Elmers. I prefer
3M 78 24-Ounce Polystyrene Foam Insulation Spray Adhesive found at Amazon and other online retailers for approx $18. You may also use Super 77 spray adhesive, 5 minute epoxy, or LOW TEMPERATURE hot glue. Rubber Cement may also work.

3M™ Polystyrene Foam Insulation 78 Spray Adhesive

Tips:
-Cut out the front view and side view on the bandsaw or with a handsaw to remove the bulk of excess material, this is easiest when working from the silhouette of a reference model
-Foam can be carved with exacto blades and saws. I prefer Olfa or x-acto heavy duty snap off blades for good reach
-Rasps and Sureform tools make quick work of the carving (available at home depot, also check your college sculpture studio)
-Foam can be sanded to refine the form. Begin with 60 grit and work up to finer papers such as 200 grit if desired. You may want a slightly course surface to allow the foam coating to adhere
 
Foam Coatings:
-Ready Patch brand spackle
-Gesso
-Plaster reinforced with burlap
-Magic-Smooth available at the Compleat Sculptor http://www.sculpt.com/
-Aqua-Resin (aqua glass reinforced) available at the Compleat Sculptor http://www.sculpt.com/
-Winterstone available at the Compleat Sculptor http://www.sculpt.com/

Selected Foam Artists: Bonnie Collura, Folkert de Jung, Rachel Harrison, Christian Maycheck, Erwin Wurm, Huma Bhaba

Folkert de Jung, Death March, 2007
Folkert de Jung, Halleluiah, 2007
Bonnie Collura, Virgin and Child, 2000
Rachel Harrison, Untitled, 1999

Erwin Wurm, Fat Convertible, 2005



3 comments:

  1. If you're uncomfortable with using a hot wire cutter to cut foam it's possible to work on it using a very finely toothed serrated knife, though it will be slightly messier and more jagged than the hot wire method.

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  2. Does using a hotwire cause offgassing? If so, what do the gasses do to your lungs? And what do foam particles to do your lungs.
    Tho I realize being artists, we don't care about a grisly, painful, premature death.

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  3. Nice article, using great equipment to measure the thickness of your paint will produce you with good information about your stuffs.

    regards,
    Elcometer 500

    ReplyDelete