3D printing has revolutionized miniature modeling, allowing fans to create incredibly detailed figures, vehicles, and accessories at any scale. But before you paint your first model, proper cleaning and preparation are absolutely essential.
1. Remove Supports Carefully
Different prints require different support strategies, but in all cases:
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Use a hobby knife or flush cutters
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Cut supports at the base
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Avoid twisting—they can tear the surface
For resin prints, warm water softens supports and makes removal easier.
2. Wash the Model Thoroughly
Resin prints often contain leftover uncured resin or oils from handling.
How to wash:
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Use warm water + dish soap
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Scrub gently with a soft toothbrush
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Rinse clean
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Air dry completely
This prevents primer from beading up.
3. Cure (for Resin Prints)
If using a resin printer:
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Cure using a UV lamp for 1–3 minutes
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Avoid over-curing—makes the model brittle
4. Sand or File Imperfections
Typical touch-ups:
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Layer lines (FDM prints)
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Small bumps or residual support marks
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Flat surfaces needing refinement
Use:
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600–1000 grit sandpaper
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Needle files
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Polishing sticks
5. Gap Filling & Repair
For multipart prints:
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Fill gaps with modeling putty
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Smooth with water or a sculpting tool
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Let dry and sand lightly
6. Prime for Maximum Paint Grip
Priming your 3D printed miniature is essential.
Recommended primers:
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Grey or white
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Finer-grain primers (for small-scale prints)
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Airbrush primer for ultra-smooth surfaces
Primer reveals blemishes—fix them now before painting.
7. Optional: Heat-Treat Warped Parts
Resin can warp slightly.
To fix:
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Dip part in warm (not boiling) water
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Straighten gently
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Hold position under cold water to set
8. Ready for Painting
Once primed and smooth, your 3D printed miniature will take paint just as well—or even better—than injection-molded kits.
Conclusion
Preparation is the key to beautiful results with 3D printed miniatures. A little extra work upfront will save you from paint issues and surface flaws later.