◆ Resin

Resin earring mold, 6 pairs

Six pairs of resin earring blanks per pour: teardrop, circle, hexagon, arch, oval and diamond.

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3D render of the printed caster for a resin earring mold with six pairs of shapes, and twelve glossy light blue resin earring blanks with small holes in front
Resin ~51 g Pro early access

A silicone mold for six pairs of resin earrings, twelve cavities in all, each blank about 30 mm tall and 4 mm thick: teardrops hanging from their narrow end, 25 mm circles, hexagons, arches, ovals and diamonds. A small post in every cavity leaves a 1.8 mm hole for an earring hook or jump ring.

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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 earring mold. Resin lets go of platinum silicone with a glossy face and no release agent, and the thin blanks peel out without bending. All twelve take about 23 ml of resin.

The two cavities of each pair sit one above the other, so you pour both from the same cup and the pair matches. The zip carries the printed caster exactly as the tool exported it, the twelve blanks 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 with a set of twelve light blue resin earring blanks in front, not a photo.

Resin earring mold, 6 pairs 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 164 ml of platinum silicone (mix it in one batch)
  • About 23 ml of UV resin or epoxy casting resin for all twelve
  • Glitter, mica, alcohol ink, tiny dried flowers and tweezers
  • Earring hooks and 4 to 5 mm jump rings, nitrile gloves and a UV lamp for UV resin

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 164 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, mica or dried flowers go in face down: the side against the silicone is the front. Fill each cavity to just below the top of its post (all twelve blanks take about 23 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

1 h 40 minPrint time
~51 gFilament
1Printed parts
182 × 78 × 16 mmSize (W x D x H)
All print details
Print details
Cast materialResin
Printed parts1
Size (W x D x H)182 x 78 x 16 mm
Print bed needed182 x 79 mm, 17 mm tall
Filament~51 g
Layer height0.2 mm
Infill15%
SupportsNot needed
DownloadZIP: printed caster (STL) + one set of six earring pairs (STL) + tool master (STL) + print and pour sheet
Added2026-09-27

Pro early access until October 27, 2026, then free with any account.

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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.

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Questions about this design

How do I make the two resin earrings of a pair match?

Pour both cavities of the pair from the same cup, one straight after the other, and add inclusions to both at once, mirroring where they sit. The two cavities of each shape are stacked one above the other in the mold so you can see both while you work.

Are resin earrings from the earring mold light enough to wear all day?

Yes. A 30 mm blank 4 mm thick weighs about 3 to 4 g, about what a glass drop weighs. For lighter earrings, fill each cavity only half way: a 2 mm blank is still stiff once it has cured. Hypoallergenic hooks (titanium or niobium) matter more for comfort than the weight of the resin.

What earring hooks fit the resin earring mold blanks?

The 1.8 mm hole takes a 4 to 5 mm jump ring of 0.7 to 0.8 mm wire, which then carries any fish hook, lever back or huggie hoop. Open each ring sideways with two pliers and close it fully so the blank cannot slip off.

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