Gemini® Heat Set Paint · made by Pratt Paints
Colour that waits for the heat.
Gemini® Heat Set Paint: artist-quality colour that stays wet until you heat it, then cures for good. Non-toxic ingredients, inherently UV-resistant, high tint strength — and every colour is one click from checkout.
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The spectrum
Pick a colour. It’s one click away.
20 Gemini® colours from yellow to titanium white. Tap a swatch to see it in the jar.
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How heat set works
Wet until you say so. Permanent the minute you don’t.
Air-dry paint decides when you’re finished. Heat set paint doesn’t: it stays open on the palette and on the piece until you bring the heat, and then it cures for good.
Paint
Straight from the jar, ready to apply — it feels like oils in body, opacity and translucence. On a non-porous surface it will not dry in the open, so blend for as long as you like and come back tomorrow.
Heat
Cure at 265°F or above for 8 minutes or longer. A heat gun for canvas and crafts, an oven for small pieces, even an iron. Heat sources vary, so test on a spare piece and adjust.
Finish
Matte or Satin Varnish straight from the jar in a thin, full layer, then heat again — 265–270°F for 12–15 minutes works best. Thick Medium and Glazing Gel build texture and custom colour.
Start here
Sets that mix into everything
A handful of colours that blend into most of the rest. Buy the set, then scale up the ones you keep reaching for.
Finish
Varnishes, mediums & thinners
Straight from the jar, no thinning needed. Matte or satin to finish, thick medium and glazing gel to build, and a thinner that cleans brushes without solvents.
Bring the heat
Heat guns & curing lamps
A heat gun cures canvas and anything that won’t fit in an oven; a curing lamp handles large-scale work. Brushes, palettes and mixing gear are in the same aisle.
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Good to know
Before you light it up
What does “heat set” actually mean?
The paint doesn't air-dry. It stays wet until it's heated to 265°F or above for 8 minutes or longer, and then it's permanent. That is the whole trick: unlimited blending time, and a finish you decide the moment of.
What do I heat it with?
A heat gun for canvas painting and other crafts; an oven for small pieces; an iron works too. Heat sources vary and so does the time they need, so run a test piece before the real one.
Is it safe to have in the studio?
Gemini® colours and varnishes are made with non-toxic ingredients and no additives. Gemini® Heat Set Thinner is non-solvent, non-flammable and non-toxic, and cleans off brushes and surfaces with rubbing alcohol or soap and water. If you prefer a solvent, Gemini® Heat Set Solvent is an odorless, colorless, low-toxicity mineral spirit made for the line.
Will the colour fade?
The pigments are inherently UV-resistant and weather fast, with high tint strength — so a little goes a long way, and it stays the colour you mixed.
What happens when I click Buy now?
You go straight to our secure Shopify checkout with just that item. Your cart is left exactly as it was, so nothing you were collecting gets swept into the order.
For studios & retailers
Wholesale, straight from the maker.
Pratt Paints manufactures the Gemini® line, so volume pricing comes without a middleman. Read the program, then request access from your customer account.