◆ Plaster
Crescent moon aroma stone tray mold
Six crescent moon aroma stones with craters, cast in plaster in a printed tray.
◆ Plaster
Six crescent moon aroma stones with craters, cast in plaster in a printed tray.
A printed tray for six crescent moons, 50 mm tall and 10 mm thick, with rounded edges and a scatter of small craters pressed into the face. A small celestial gift that also works as an aroma stone or a place card.
Made with our tray mold generator in its rigid tray mode: print the tray, wipe in a release agent and pour plaster, Jesmonite or a fine concrete straight in. The crescent has no overhangs anywhere, so each moon tips out of the rigid tray.
The zip carries the tray exactly as the tool exported it, one moon on its own as an STL, the master uploaded to the tool, and a print and pour sheet with the volume of each cavity.
Shown as a 3D render of the printed tray with three white plaster moons in front, not a photo.
Print the tray as exported, cavities up, no supports. PLA is fine: plaster only gets warm as it sets.
Wipe a thin film of mold release, petroleum jelly or cooking spray into every cavity, including the fine detail.
Mix casting plaster to a pouring cream (add pigment now if you want colour), fill each cavity and tap the tray on the table for a minute to lift the bubbles.
Leave it for an hour until the plaster is warm and hard, then flex the tray corners and tip the pieces out. Let them dry for a day before you add oils or paint.
Print details
| Cast material | Plaster |
|---|---|
| Printed parts | 1 |
| Size (W x D x H) | 166 x 116 x 14 mm |
| Print bed needed | 166 x 116 mm, 14 mm tall |
| Filament | ~101 g |
| Layer height | 0.2 mm |
| Infill | 15% |
| Supports | Not needed |
| Download | ZIP: printed tray (STL) + one aroma stone (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.
Let the moon dry for a day, brush gilding size or thin PVA into the craters only, wait until it turns tacky, then press gold or copper leaf over it and brush away the loose flakes. The leaf only sticks where the size is.
Yes, with a fine, sand-free mix or Jesmonite: coarse aggregate will not reach the crescent tips. Concrete moons are heavier and suit a paperweight or place card better than an aroma stone, because they soak up far less oil.
Each moon takes about 9 ml of mixed plaster, so one kilogram bag fills the six-moon tray more than ten times. Mix one tray at a time; plaster starts to set within ten minutes.
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