◆ Candle wax
Heart wax melt tray mold
Six pillowy heart wax melts at a time, from a silicone tray you pour yourself.
◆ Candle wax
Six pillowy heart wax melts at a time, from a silicone tray you pour yourself.
A tray of six heart wax melts, each 37 mm across and 14 mm deep, with softly rounded edges on the show face and a gentle draft on the sides so every heart slides out of the silicone whole.
Made with our tray mold generator in its flexible silicone tray mode. You print one part, a caster: an open box whose walls follow the six hearts, with a raised heart standing in each spot. Pour silicone into it, let it cure, peel it out, and that silicone is a bendy six-cavity tray you fill with wax again and again.
The zip carries the printed caster exactly as the tool exported it, one heart on its own as an STL, the master that was uploaded to the tool, and a print and pour sheet with the silicone figure the tool measured.
Shown as a 3D render of the printed caster with three melts in front, not a photo.
Print the caster as exported, open side up. It is one part, so there are no seams to seal. No supports.
Set it on a level surface. Mix 144 ml of silicone in one batch and pour it into one corner in a thin stream, letting it flow round the raised shapes until it is level with the rim.
Tap the caster on the table for a minute to bring the bubbles up, then let the silicone cure for as long as its datasheet says.
Peel the cured silicone out of the caster. That silicone is your tray, and the caster is ready for another one.
Fill each cavity, let it set, then flex the tray and peel it back to pop the pieces out.
Print details
| Cast material | Candle wax |
|---|---|
| Printed parts | 1 |
| Size (W x D x H) | 134 x 84 x 24 mm |
| Print bed needed | 134 x 85 mm, 24 mm tall |
| Filament | ~76 g |
| Layer height | 0.2 mm |
| Infill | 15% |
| Supports | Not needed |
| Download | ZIP: printed caster (STL) + one wax melt (STL) + tool master (STL) + print and pour sheet |
| Added | 2026-09-24 |
Made with the free Tray mold generator. Upload your own model and get the same kind of mold built around it, in your browser.
Free download. Opens the Thingiverse listing in a new tab.
Free for personal use. Selling the pieces you cast needs a commercial licence (Pro or Founder); passing on the file itself is not permitted on any plan. Full terms.
New to casting? Read the ice cube tray mold guide.
Most melt waxes hold 6 to 10% fragrance oil by weight; the wax supplier states the maximum. Stir it in at the temperature the wax asks for, then pour a little cooler than you would for a candle so the hearts set without sinking in the middle.
A printed tray is rigid, and a wax melt with rounded edges only lets go when you can flex the tray and peel it away. Silicone also gives the melts a glossy face straight from the mold, where a printed cavity would copy every layer line onto the wax.
Yes. Cast the tray in a food-safe platinum silicone and it works for chocolate, and melt-and-pour soap releases from it just as well. Keep one tray for food and a separate one for wax and soap.
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