Dab indents with Elmers Carpenter glue; then add plastic wood
Smooth the top with Dremel tool
Color artwork with watercolor pencils as in Par. 6B but with as little water as possible as water will affect the original paper surrounding indents.
Repairing badly warped pieces
Soak warped or curled pieces or ply in clean water for a few hours until paper has loosened
Remove paper from wood
Place puzzle paper between pieces of paper towel and dry under weight.
Sandwich wood layer between wood boards, and place in vise and tighten.
Allow to dry overnight. Paper and wood should now be flat. Glue them together following Par. II.E.
Layer between small sheets of release paper.
Put between two small blocks of wood and place in vise overnight.
Use dry watercolor pencils to mute discoloration from the original moisture damage.
Stains, discolor, scratches, nicks, fold marks on puzzle surface.
Scratches, nicks, fold marks: carefully touch up with closest damp watercolor pencil.
Stains, discoloration: mute with dry watercolor pencils; use lighter pencils and color on side of pencil.
Puzzles that are too tight or pieces go together from only one direction.
Some puzzles made in the 1930s are too tight and highly prone to damage. Use Dremel tool to lightly grind the edges of all puzzle pieces so as to loosen puzzle. This is VERY time consuming.
Some puzzles were cut with a slanted blade (either because blade not perpendicular to table or blade not tight enough and bent during cutting process, especially while cutting knobs). Use Dremel tool to grind down the BOTTEM edge of the part of each piece that slants OUTWARD. Test for proper fit.