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How to Avoid Tide Marks When Using Washes

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Washes are one of the easiest ways to add depth to miniatures, flowing into recesses and shading details quickly. But they can also dry with unwanted tide marks, blotchy rings or stains on raised surfaces. These problems come from how the wash dries as the liquid evaporates, pulling pigment to the edges of pools. A few technique changes help washes settle cleanly.

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Why tide marks appear

As a wash dries, water evaporates fastest at the edges of a puddle. Pigment moves toward those edges and settles there, creating darker rings called tide marks or coffee stains.

Washes applied too heavily on flat areas, or left to pool on raised surfaces, are most likely to form visible marks. Matte basecoats can also absorb washes unevenly.

Apply washes with control

Load the brush moderately and guide the wash into recesses rather than flooding the entire model. Wick excess from flat areas using a clean, damp brush.

For large flat surfaces, thin the wash and apply a lighter layer, or use pin washing by placing wash only into recesses with a fine brush.

Use a gloss varnish first

Applying a gloss varnish before washing creates a smooth surface that helps washes flow into recesses. The wash moves more easily and dries more evenly.

Gloss varnish also protects basecoats if you need to clean up excess wash. Apply matte varnish after painting to reduce shine.

Break surface tension

Washes with lower surface tension flow better. Many commercial washes contain flow improvers, but homemade washes often need a drop of flow aid or medium.

Water alone can bead up on smooth surfaces. Test your wash mix on a spare model or painted test piece before using it on finished miniatures.

Clean up while wet or fix after

Watch washes as they dry and use a damp brush to remove pooling or developing rings. Once dry, tide marks can be covered by reapplying the base colour or highlights.

Layering highlights over dried washes often hides marks and adds contrast. Shiny wash patches can be reduced with matte varnish.

Try oil or enamel washes

Some painters use oil or enamel washes over gloss varnish for more control. These washes stay workable longer and can be cleaned with odourless thinner.

Use proper ventilation and test compatibility, since solvents can damage some paints and plastics. Always seal acrylic paint with varnish first.

Try a practice model

Keep an old or cheap miniature painted with a few common basecoats as a test piece. Trying a new wash, a thinner mix or a different varnish on it first shows exactly how the wash flows and dries before you use it on a squad you care about.

Photograph the test piece under your normal painting light after the wash dries. Tide marks that are hard to see in person often stand out in photos, so this also helps you catch problems before a model goes on the table or on social media.

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