◆ Aroma beads

Cowboy hat car freshie mold

A cowboy hat car freshie with a hat band and a curled brim. Two per bake from a silicone mold you make.

Make your own tray mold
3D render of the printed caster for a two-cavity cowboy hat freshie mold, with three tan cowboy hat car freshies with a hat band in front
Aroma beads ~79 g Pro early access

A cowboy hat car freshie 105 x 60 mm and 10 mm thick, seen from the front: a pinched crown with a crease, a hat band, and a wide brim that curls up at both ends with a stitch line along its edge. The hanging hole sits in the crown, where the freshie is thickest, so it hangs level.

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Made with our tray mold generator in its flexible silicone tray mode: print the caster, pour a platinum silicone into it and peel out a two-hat freshie mold. You bake the aroma beads in that silicone, never in the print. The ridges in the mold leave grooves on the freshie for a second colour of beads in the band, or for mica afterwards.

It matches our cowboy boot freshie, so the two make a western set on one market table. The zip carries the printed caster exactly as the tool exported it, one freshie 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 hats in front, not a photo.

What you need

4
  • About 146 ml of platinum silicone rated for 200 C (400 F) or more
  • Unscented aroma beads, about 33 ml per freshie by volume, heaped
  • Freshie fragrance oil and mica powder, plus a second bead colour for the band
  • A baking sheet, a skewer, and elastic cord to hang it

How to cast it

6

  1. Print the caster as exported, open side up, no supports. It never goes in the oven: it is only the form the silicone cures in, and PLA softens at about 60 C.

  2. Pour 146 ml of a platinum silicone rated for 200 C (400 F) or more into one corner in a thin stream, letting it rise over the shapes to the rim. Tap out the bubbles, let it cure and peel it out: that silicone is your freshie mold, with a post in each cavity for the hanging hole.

  3. A day or more ahead, shake unscented aroma beads with freshie fragrance oil in a lidded glass jar, about 1 oz of oil per pound of beads, and leave them until they feel dry. Shake in a pinch of mica for colour.

  4. Set the silicone mold on a baking sheet and fill each cavity level with the rim, then heap it slightly: the beads settle as they melt. Brush any beads off the top of each post.

  5. Bake at 300 to 350 F (150 to 175 C) for 10 to 15 minutes, in a ventilated kitchen and without leaving the oven, until the beads have fused but the top still looks beaded. Press with a skewer: done beads hold together.

  6. Let the mold cool completely, then flex it and pop the freshies out. Brush mica into the detail lines if you like, poke the hole clear with a skewer if a bead skinned over it, and hang it on an elastic cord where it touches nothing in the car.

Print details

2 h 40 minPrint time
~79 gFilament
1Printed parts
117 × 138 × 22 mmSize (W x D x H)
All print details
Print details
Cast materialAroma beads
Printed parts1
Size (W x D x H)117 x 138 x 22 mm
Print bed needed138 x 117 mm, 22 mm tall
Filament~79 g
Layer height0.2 mm
Infill15%
SupportsNot needed
DownloadZIP: printed caster (STL) + one freshie (STL) + tool master (STL) + print and pour sheet
Added2026-09-26

Pro early access until October 26, 2026, then free with any account.

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.

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Questions about this design

How do I keep the brim of the cowboy hat freshie from breaking?

The brim tips are the thinnest part, about 5 mm across. Pack the beads firmly into both tips before you fill the crown, and let the freshie cool completely in the mold before you flex it out: warm freshies bend and tear where the brim meets the crown.

Which scents sell best on a cowboy hat freshie?

Leather, tobacco and vanilla, sandalwood, whiskey and cedar are the western favourites, with a sweet scent like Hawaiian or cotton candy for contrast. Scent the beads at about 1 oz of fragrance oil per pound and let them sit until they feel dry before baking.

Can I add a name to the band of the cowboy hat freshie?

Yes, after baking. The band is a flat strip about 7 mm tall between two grooves, which fits small vinyl letters or a paint pen. Seal paint with a light coat of clear spray so fragrance oil seeping out of the beads does not lift it.

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