Super Strong Water Resistant Paper Mache

An inexpensive material for making seasteading mockups

Also published at: Substack

New seastead designs require a great deal of prototyping.

Cardboard and paper mache are inexpensive, flexible, and strong materials well suited for mockups.

This recipe—derived from the Super‑Strong Paper Mache developed by Jonni Good of Ultimate Paper Mache—creates a strong, thin, water resistant paper mache.

Introduction

Uses Titebond III wood glue with paper strips for an extremely tough mask that can dry overnight.

Materials

Procedure

  1. Prepare the form - Build your mask base (cardboard pattern, foil/tape form, or clay over a mannequin). If using an object you need to keep pristine (like a bowl), cover with plastic wrap as a release.

  2. Tear paper strips - Tear (don’t cut) to create feathered edges that blend well. Use narrower pieces for tight curves.

  3. Mix your glue - Use one of the measured mixes above. Start undiluted if possible; add a splash of water only if needed for brushing/spreading. Use a disposable container.

  4. Apply one strong layer - Either dip strips into the glue and squeegee off excess with fingers, or brush glue onto the surface and lay dry strips into it—both methods work.

    Overlap strips and press firmly so glue fully wets the paper and bonds seams. Support the form from the inside while pressing to keep details crisp.

  5. Clean up puddles - Check for areas where glue pools (ears, corners). Wick away excess with a paper towel so the layer dries evenly.

  6. Dry thoroughly - Set on wax paper and let dry overnight; a fan speeds things up. Most masks are ready to paint the next day; spot‑check any thicker areas.

  7. Optional: reinforce the inside - For wearable masks, add a second inside layer after the outside cures, then dry again. Jonni often finds one layer sufficient with this glue, but inside reinforcement increases durability.

  8. Prime and paint - Prime with acrylic gesso or spray primer for even color, then paint with acrylics; spray paints also work (matte finishes look great).

  9. Seal (optional) - Finish with an acrylic varnish if desired, especially for handling and mild humidity protection.

Tips, cautions, and variations