◆ Resin

Resin Christmas ornament mold, 6 shapes

Six flat resin Christmas ornaments per pour: snowflake, star, tree, bauble, bell and stocking, each with its hanging hole.

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3D render of an orange printed caster beside a green silicone resin Christmas ornament mold holding pale blue tree, star, snowflake and stocking ornaments, with a bell and a bauble ornament in front
Resin ~71 g

A silicone mold for six resin Christmas ornaments, each about 58 mm tall and 5 mm thick: a six-armed snowflake with branches, a five-point star, a fir tree with its trunk, a round bauble with its cap, a bell with a clapper and a stocking with a cuff. Each hangs from a round tab with a post in the mold that leaves a small hole for a thread or an ornament hook.

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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 ornament mold. Resin lets go of platinum silicone with a glossy face and no release agent, and the flexible mold peels off the thin snowflake arms without snapping them. The whole set takes about 36 ml of resin.

Clear resin with silver glitter, ice blue mica, red and green swirls, or a pressed sprig of pine in the bauble. The zip carries the printed caster exactly as the tool exported it, the six ornaments on their 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 beside the silicone mold it pours, four ornaments still in the mold and two out in front, not a photo.

Resin Christmas ornament mold, 6 shapes at a glance: every printed part with its size, print time, filament, print settings and the three steps to use it

What you need

4
  • About 248 ml of platinum silicone (mix it in one batch)
  • About 36 ml of epoxy casting resin or UV resin for all six
  • Glitter, mica, alcohol ink or dried pine sprigs, and tweezers
  • Ribbon, thread or ornament hooks, nitrile gloves and a heat gun or lighter for bubbles

How to cast it

5

  1. 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.

  2. Mix 248 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.

  3. Work in a ventilated room with nitrile gloves on. Mix epoxy casting resin exactly at the ratio on the bottle, stir slowly for three minutes scraping the sides, and let it rest a few minutes so the bubbles rise.

  4. Glitter and mica go in first, face down: the side against the silicone is the front of the ornament. Fill each cavity to just below the top of its post (all six ornaments take about 36 ml together) so the hole stays open, and pass a heat gun or a lighter quickly over the surface to pop the bubbles. Cover the mold against dust.

  5. Leave epoxy 24 hours (UV resin: cure each layer under the lamp), then flex the mold and peel it off the pieces rather than pushing them out. Let epoxy harden two more days before you fit jump rings, hooks or a tassel.

Print details

2 h 20 minPrint time
~71 gFilament
1Printed parts
164 × 141 × 18 mmSize (W x D x H)
All print details
Print details
Cast materialResin
Printed parts1
Size (W x D x H)164 x 141 x 18 mm
Print bed needed165 x 141 mm, 18 mm tall
Filament~71 g
Layer height0.2 mm
Infill15%
SupportsNot needed
DownloadZIP: printed caster (STL) + one set of six ornaments (STL) + tool master (STL) + print and pour sheet
Added2026-10-29
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.

ZIP: printed caster (STL) + one set of six ornaments (STL) + tool master (STL) + print and pour sheet

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.

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Questions about this design

How do I hang the resin Christmas ornaments?

Every ornament has a round tab with a small hole through it, left by a post in the mold. Thread a thin ribbon or a gold cord through it and knot it, or use a standard wire ornament hook. Pour only to just below the top of the post or resin closes the hole.

Will the snowflake arms break when I demold the resin Christmas ornaments?

Not if the resin has cured a full day. Peel the silicone back from the snowflake slowly, arm by arm, instead of pushing it out from behind. The arms are 5 mm wide and 5 mm thick, sturdy for epoxy, but let them harden two more days before you hang them.

How do I put a name on a resin Christmas ornament?

Pour the ornament, let it cure, then write the name with a white or gold paint pen on the flat back, or use a small vinyl decal on the front. A thin top coat of resin or a spray varnish over the name keeps it from rubbing off.

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