If you’ve ever primed a resin miniature and watched the paint bead up, go tacky, or rub off the first time you handle it… the issue is almost always prep.
Resin minis can look perfect out of the box, but they still need a quick clean and a few simple steps before paint will truly grip and behave. This guide covers exactly how to prep resin miniatures for painting—cleaning, support removal, safety, priming, and a few fast tricks that make your paint jobs look instantly better.
Helpful videos (quick watch list) 🎥
• Cleaning/prep fundamentals: How to Prepare Minis for Painting (step-by-step)
• Airbrush priming (deep dive): Vince Venturella – Complete Guide to Airbrush Priming
• Priming tips (spray can or general): 5 Priming Tips You Need to Know
• Zenithal priming (fast “quick win”): Three Easy Ways to Zenithal Prime (and why)
Resin is safe to handle as a finished model, but the dust from sanding or drilling is the part you don’t want in your lungs.
Do this:
• Sand wet whenever possible (keeps dust down)
• Wear suitable respiratory protection if you’re sanding a lot
• Avoid eating/drinking at the workspace while sanding
• Wash hands after handling and before touching your face
• Vacuum or wipe down your area after sanding (don’t dry-brush dust into the air)
Read more (reputable guidance):
• UK Health & Safety Executive guidance on dust risks + controls: HSE – Harmful dusts (including wet sanding + RPE)
What you’ll need (simple kit)
You don’t need a full hobby lab. This is enough for 95% of minis:
• Bowl or tub of warm water (not boiling)
• Mild dish soap (degreasing type is ideal)
• Soft toothbrush or makeup brush
• Side cutters (flush cutters if you have them)
• Hobby knife (sharp blade)
• Small files or sanding sticks (fine grit)
• Superglue (cyanoacrylate) for assembly
• Primer: spray primer or airbrush primer (mini-safe)
Optional but helpful:
• Isopropyl alcohol (for stubborn residue)
• Epoxy putty (green stuff/milliput) for gap filling
• Pin vise + brass rod/paperclips for pinning larger parts
This is the step most people skip, and it’s the main cause of primer issues.
Why cleaning matters:
Trace residues from processing or handling can cause “fish-eyes” (primer pulling away), poor adhesion, or tackiness.
Step-by-step cleaning:
Fill a bowl with warm water + a few drops of dish soap
Dunk the mini and gently scrub it with a soft toothbrush (get into creases)
Rinse thoroughly under clean water
Let it air-dry completely (water trapped in details can mess with primer)
Want a visual walkthrough?
• Cleaning your miniatures before painting (step-by-step)
Quick tip: Don’t use boiling water. Very hot water can soften thin parts.
• Clip larger nubs first with cutters (leave a tiny bit proud)
• Trim flush carefully with a hobby knife
• Lightly sand the area (preferably wet sanding)
• Feather outward to blend the area—don’t sand a crater
Fixing warps (straightening resin parts) 🔥
Dip the bent part in warm water for 10–20 seconds
Gently straighten it
Hold it in place and dip it in cool water to set
Assembly tips (so your paint doesn’t crack later) 🧩
• Dry-fit parts before gluing
• Lightly roughen smooth contact surfaces (better glue grip)
• Use small amounts of superglue
• For heavy parts (big wings, chunkier models), consider pinning with a pin vise
Key rules:
• The model must be fully dry
• Prime in thin coats (more light passes, not one heavy blast)
• Don’t prime in high humidity or freezing temps
• Keep spray moving to avoid detail clogging
If you want a reliable, detailed priming tutorial:
• How to Prime Miniatures Correctly (spray technique)
• Complete Guide to Airbrush Priming
Best primer colour?
• Black: forgiving, great for grimdark, fast shading
• Grey: neutral, easiest to judge colours
• White: makes bright colours pop, less forgiving
• Zenithal: fast “lighting” base (see below)
Quick wins that instantly improve paint results ⚡
Quick win #1: Zenithal prime
Prime black, then lightly spray white/grey from above. It gives instant highlights and makes painting faster.
Watch:
• Three Easy Ways to Zenithal Prime (and why)
• (Alternative) Zenithal Highlighting & Priming Guide
Quick win #2: Check under a strong light before priming
You’ll spot nubs, seams, and rough joins before primer locks them in.
Quick win #3: Add a handle
Blu-tack the base to a cork/pill bottle. Less touching = better adhesion.
Quick win #4: Seal for tabletop durability
A matte varnish after painting helps protect from chips.
FAQ ✅
Do resin miniatures need to be washed before painting?
Yes. A quick warm soapy wash helps primer adhere and prevents beading/tacky spots.
Can I prime resin miniatures without washing them?
You can, but washing is the most common fix for primer failures.
Is resin dust dangerous?
Dust from sanding/drilling is the main risk. Wet sand and use appropriate respiratory protection for heavier sanding.
What primer is best for resin minis?
Miniature-focused primers (spray or airbrush) applied in thin coats are the safest bet.
Ready to paint something new? Browse our resin miniatures that are perfect for priming and painting—fantasy heroes, monsters, and display-worthy models.
Browse minis ready for priming/painting: https://www.crystalife.co.uk/ttrpg-mini-figurines/
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