How to Fill Cracks in Sculpey

Written by jill davis Google
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How to Fill Cracks in Sculpey
Cracks in your Sculpey creation are easy to fill. (Seiya Kawamoto/Digital Vision/Getty Images)

Crafters have been successfully moulding with Sculpey for many years. A pliable clay, Sculpey can be moulded and formed like ceramic clay but is simply baked in the oven instead of a kiln. After baking, it can be sanded, drilled, carved and painted with acrylic paint or Sculpey-brand Glaze. Cracks occasionally form after the Sculpey is baked, but they can be easily filled without any noticeable difference in the finished product.

Skill level:
Moderately Easy

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Things you need

  • Sandpaper
  • Plumber's Putty
  • Small putty knife
  • Toothpick
  • Matching paint
  • Super Glue

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Instructions

    Plumber's Putty Method

  1. 1

    Sand any rough edges around the crack so the putty will go in cleanly.

  2. 2

    Apply Plumber's Putty to the crack, using a putty knife. Use a toothpick for smaller cracks. Apply enough to fill in and cover the crack. Let harden.

    How to Fill Cracks in Sculpey
    Use a small putty knife to fill the cracks. (Zedcor Wholly Owned/PhotoObjects.net/Getty Images)
  3. 3

    Sand the putty-filled area with fine-grit sandpaper to make it smooth and ready to paint. Plumber's Putty is grey, so paint the patched area to match the clay. When the paint is dry, the clay piece is ready to paint in the desired colour.

    Super Glue Method

  1. 1

    Purchase Super Glue with cyanoacrylate, which works best for filling in smaller cracks.

  2. 2

    Add drops of the glue into the cracks.

  3. 3

    Quickly wipe any excess glue from the crack, using twisted pieces of paper towel.

  4. 4

    Hand-sand the filled area to get rid of bumps or hard edges. The piece is now ready to paint.

Tips and warnings

  • Plumber's Putty and Super Glue are available at hardware stores and home improvement centres.
  • Don't fill the crack with additional soft Sculpey and put it back into the oven. The new clay won't adhere to the baked portion, and the oven may enlarge the crack.

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