◆ Resin
Resin rolling tray mold
A 180 x 120 mm resin rolling tray with a 10 mm deep well and a rounded lip. Silicone you pour yourself.
◆ Resin
A 180 x 120 mm resin rolling tray with a 10 mm deep well and a rounded lip. Silicone you pour yourself.
A silicone mold for a rectangular resin rolling tray 180 x 120 mm and 14 mm tall: a 7 mm lip with 12 mm rounded corners round a 10 mm deep well with a flat 4 mm floor. Every inside corner is eased, so nothing collects in a crease and the tray wipes clean. It works just as well as a vanity, trinket, key or valet tray.
Made with our tray mold generator in its flexible silicone tray mode: print one part, a caster, pour a platinum silicone into it and peel it out. That silicone is the mold, and the tray is cast upside down in it: the raised block in the cavity forms the well, the lip forms against the silicone, and the poured side becomes the flat underside. Resin releases from it with a gloss and no release agent. One tray takes about 142 ml of resin.
Rolling trays are among the best selling resin pieces, poured in bold colours, glitter or with a photo or pattern under the floor. The zip carries the printed caster exactly as the tool exported it, one tray 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 a teal resin rolling tray in front, not a photo.
Print the caster as exported, open side up, no supports. Turn on ironing for the top surfaces, or sand the raised shapes smooth and brush on XTC-3D: the silicone copies every layer line, and resin shows each one on its glossy face.
Mix 509 ml of platinum silicone and pour it into one corner of the caster in a thin stream until it covers the shapes to the rim. Tap out the bubbles, let it cure as long as its datasheet says and peel it out. That silicone is your resin mold: platinum silicone gives resin a glossy face and needs no release agent.
Set the mold on a level surface in a ventilated room, gloves on. The tray is cast upside down: the raised block in the middle of the mold forms the well, and what you pour last is the underside of the tray.
Mix about 142 ml of casting epoxy that takes at least 15 mm in one pour, stir slowly for three minutes and add colour or glitter. A coating epoxy has to go in three or four layers, each once the last has gelled.
Pour into the lip channel first so the resin flows round the block, then fill to the top, and pass a heat gun over it after five and fifteen minutes. Cover it and leave it 48 to 72 hours.
Flex the mold and peel it back from the tray corners first. Sand the underside flat, add felt pads, and let the tray cure a week before use.
Print details
| Cast material | Resin |
|---|---|
| Printed parts | 1 |
| Size (W x D x H) | 193 x 133 x 27 mm |
| Print bed needed | 194 x 134 mm, 27 mm tall |
| Filament | ~164 g |
| Layer height | 0.2 mm |
| Infill | 15% |
| Supports | Not needed |
| Download | ZIP: printed caster (STL) + one tray (STL) + tool master (STL) + print and pour sheet |
| Added | 2026-09-27 |
Pro early access until October 27, 2026, then free with any account.
Like it or post your print on Thingiverse
Make your own tray mold →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 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.
The mold is 14 mm deep, and most casting epoxies take 10 to 25 mm in one pour, so one pour fills it: check the maximum depth on your resin. A coating resin rated for 3 to 6 mm must go in three or four layers, each poured once the last has gelled, or it overheats and yellows.
The tray is poured upside down, so the floor you pour last is the underside. Fill the mold to about 3 mm below the top, let it gel, lay a sealed print or sticker face down on the resin, and pour the last layer over it. The pattern shows through the floor from above.
It can. Most epoxies soften again above 50 to 60 C, and a car in the sun gets hotter than that. Let the tray cure a full week before use, choose a resin with a high heat rating if it will travel, and store it flat, never propped on its edge.
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