◆ Soap

Happy toast soap mold

A slice of toast that smiles back: an 80 mm soap bar with crust, eyes and rosy cheeks, from a silicone mold you print.

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3D render of the smiling toast soap master fused on its printed charcoal base, between the orange and blue walls, with the charcoal clamps behind
Soap ~204 g

A soap bar 79 x 79 mm and about 21 mm thick shaped like a slice of bread: a raised crust round the edge, little crumb pores on the face, two eyes, a smile and two rosy cheeks.

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Made with the box mode of our silicone mold maker in its contoured shape: print the base with the soap master fused onto it face up, the two walls and the clamps, pour about 366 ml of silicone, and the block you get casts the bar face down, so the face comes out on the show face and the back stays flat.

A breakfast joke for a kitchen sink, a stocking filler or a market stall of food soaps that are not food. Pour it golden with a toasted honey or vanilla scent, and dab the cheeks pink first if you like. The zip carries every printed part, the soap master as its own STL, the tool's own print-settings sheet and a recipe file for the generator.

Shown as a 3D render of the printed mold parts pulled apart around the master, not a photo.

Happy toast soap mold at a glance: every printed part with its size, print time, filament, print settings and the three steps to use it

What you need

3
  • About 400 ml of silicone (mix it in one batch)
  • Melt-and-pour soap base, about 108 ml per bar
  • Golden brown and pink soap colour, a fragrance and rubbing alcohol in a spray bottle

How to cast it

6

  1. Print the base with the master fused onto it, the two walls and the two clamps.

  2. Stand the base on the table. Set each wall down a few centimetres out from it and slide it in over the table until the ridge round the base sits in the groove at its foot, then slide the clamps down over the seams. Once they are on, the walls cannot lift, and the ridge seals the bottom.

  3. Mix 400 ml of silicone in one batch and pour it into a corner, letting it rise around the master until it covers the top.

  4. Once it has cured, take the clamps off, slide the walls straight out and pull the silicone block off the master. That block is your mold.

  5. Turn the block over. Dab a little pink soap into the two cheeks with a dropper and let it skin over, spray with alcohol, then pour the golden soap at 55 to 60 C and spray again.

  6. Let it set for a few hours, flex the silicone and push the toast out from the back.

Print details

6 hPrint time
~204 gFilament
5Printed parts
106 × 107 × 57 mmSize (W x D x H)
All print details
Print details
Cast materialSoap
Printed parts5
Size (W x D x H)106 x 107 x 57 mm
Print bed needed129 x 107 mm, 57 mm tall
Filament~204 g
Layer height0.2 mm
Infill15%
SupportsNot needed
DownloadZIP: 5 printed parts (STL) + soap bar master (STL) + print sheet + recipe
Added2026-09-25
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Made with the free Silicone mold maker generator. Upload your own model and get the same kind of mold built around it, in your browser.

Download free on Thingiverse

Free download. Opens the Thingiverse listing in a new tab.

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 silicone mold maker guide.

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Questions about this design

How do I get pink cheeks on the toast soap?

Drip a few drops of pink soap into each cheek with a dropper or pipette, let it skin over for a minute and spray it with alcohol so the next layer bonds. Then pour the golden main colour over the whole face.

Which scents suit a toast soap?

Warm bakery scents: honey, vanilla, brown sugar, cinnamon or a buttered toast fragrance oil. Stay within the melt-and-pour base's maximum fragrance load, usually 3 percent.

Does the smile on the toast soap stay sharp?

Yes. The smile, eyes and cheeks stand up from the face by 1.3 to 1.8 mm, which the silicone copies cleanly. A clear or pale base shows them best.

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