A tray of six large ice cubes, 45 mm across and 26 mm deep, each cut like a brilliant: a flat six-sided table on top, twelve crown facets around it and straight sides below. One cube fits a whisky tumbler.
Made with our tray mold generator in its flexible silicone tray mode, which is what the tool was first built for: print the caster, pour a food-safe platinum silicone into it and peel out a flexible six-cube tray. Ice pops out of silicone with a twist; it would crack out of a rigid printed tray.
The zip carries the printed caster exactly as the tool exported it, one cube on its own as an STL, the master 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 ice cubes in front, not a photo.
What you need
- About 347 ml of food-safe platinum silicone (mix it in one batch)
- Water: about 31 ml per cube
- A baking sheet to carry the full tray to the freezer
How to cast it
- 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 347 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.
| Cast material | Ice |
|---|---|
| Total print time | 12 h 8 min |
| Printed parts | 1 |
| Size (W x D x H) | 159 x 108 x 39 mm |
| Filament | ~160 g |
| Layer height | 0.2 mm |
| Infill | 15% |
| Supports | Not needed |
| Printer | Sliced with PrusaSlicer 2.7.2: 0.4 mm nozzle, 0.2 mm layers, 3 walls, 15% infill, MK3-class speeds. These parts only hold liquid silicone while it cures, so PLA is fine. No supports. |
| Download | ZIP: printed caster (STL) + one ice cube (STL) + tool master (STL) + print and pour sheet |
| Added | 2026-09-24 |
Pro early access until October 24, 2026, then free with any account.
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.
Made with the free ice cube tray mold generator. Upload your own model and get the same kind of mold built around it, in your browser.
New to casting? Read the ice cube tray mold guide.
