Free wax melt mold maker
Design a printable wax melt or tart mold in your browser, preview it in 3D, and download a print-ready STL or 3MF in seconds. Multi-cavity snap bars, shaped tarts and clamshell inserts for soy and paraffin - no card and no software to install. Try it without signing in; a free account gets you the files.
Free · no card · STL & 3MF download
How it works
- Choose how many cavities you want and their shape - hearts, rounds, stars, or upload your own tart shape.
- Set the cavity size in true millimetres (a standard clamshell segment is roughly 30 mm) and the tray gets a print-ready flexible silicone caster too.
- Preview on a virtual print bed, download the STL or 3MF, and pour your melted wax.
What you get
A watertight, print-ready multi-cavity tray sized in real millimetres, plus a matching flexible silicone caster so the finished melts pop out cleanly. Everything is generated on your device - your model never leaves the browser.
Materials & pouring tips
- Silicone caster: pour into the flexible silicone caster rather than the hard print - wax melts release far more easily and keep sharp edges.
- Wax & fragrance: soy and paraffin both work; wax melts carry a higher fragrance load (up to ~10%) than candles, so let them cure a few days before packing.
- Filament: PLA is fine for wax's low pour temperatures; PETG lasts longer across many batches.
- Cavity depth: keep tart cavities shallow (8-12 mm) so a single melt sits neatly in a warmer.
Who it's for
Wax melt and tart makers, soy-candle hobbyists and small home fragrance shops who want a custom snap-bar or tart shape without CAD. If you are casting a whole candle rather than melts, use the candle mold maker; for chocolates and gummies in the same tray style, see the ice & chocolate tray.
FAQ
Is the wax melt mold maker free?
Yes, free. You can design and preview a wax melt mold without signing in; downloading the files needs a free account (no card). The tray tool runs entirely on your device; the candle mold sends your model's geometry to our server to build the two-part box, and it is deleted as soon as your files are ready.
Can I pour wax straight into a printed mold?
You can, but wax releases much better from the flexible silicone caster the generator produces. Pour into the silicone, let it set, and flex the melts out - no scraping.
What size should the cavities be?
A standard clamshell segment is about 30 mm across and 8-12 mm deep, holding roughly one warmer's worth of wax. You can set any size in millimetres in the generator.
What file format do I get?
A standard STL or 3MF that loads straight into any slicer - Cura, PrusaSlicer, OrcaSlicer and others.
What's the difference between this and a candle mold?
Wax melts are small, wickless pieces cast in a multi-cavity tray. A whole candle is a single larger pour with a wick - use the candle mold maker for that.