◆ Candle wax

Bubble tower candle mold

A 2 x 2 x 4 bubble tower candle, 77 mm tall: the tall sister of the bubble cube. A silicone mold from a printed shell.

3D render of the bubble tower master fused on its printed charcoal base, between the orange and blue hugging shell halves
Candle wax ~186 g Pro early access

A bubble tower candle 77 mm tall and 42 mm square: sixteen round bubbles, two by two and four high, the taller, slimmer version of the viral bubble cube.

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Made with the hugging-shell mode of our silicone mold maker: print the base with the tower fused onto it and the two shell halves, pour about 216 ml of silicone, and the flexible mold that comes out peels off every waist between the bubbles. Small rounded fillers close the gaps between neighbouring bubbles, so the candle casts solid, with no tunnel down the middle.

Pour one next to a bubble cube in the same colour for a set, or a row of three in soft neutrals for a shelf. The zip carries every printed part, the tower 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.

What you need

4
  • About 242 ml of silicone (mix it in one batch)
  • About 96 g of pillar wax per candle: each cast is 107 ml
  • Steel binder clips, tape or a hot glue gun
  • A primed wick for a 40 mm pillar, about 100 mm long

How to cast it

6
  1. Print the base, which has the master already fused onto it, and the two shell halves. No supports.

  2. Stand the shell halves on the base around the master and hold the seams shut with steel binder clips. The seats for them are built into the shell.

  3. Tape the outside seams or run a bead of hot glue along them, because silicone finds every gap.

  4. Mix 242 ml of silicone in one batch, pour it into the open top in a thin stream, and fill level with the rim.

  5. Once it has cured, unclip the shell, lift it off and peel the silicone off the master. That silicone is your mold.

  6. Set the silicone back in the shell to keep its shape, and cast into it through the opening the base left.

Print details

6 hPrint time
~186 gFilament
9Printed parts
88 × 88 × 91 mmSize (W x D x H)
All print details
Print details
Cast materialCandle wax
Printed parts9
Size (W x D x H)88 x 88 x 91 mm
Print bed needed91 x 85 mm, 92 mm tall
Filament~186 g
Layer height0.2 mm
Infill15%
SupportsNot needed
DownloadZIP: 9 printed parts in 4 STL files + candle master (STL) + print sheet + recipe
Added2026-09-25

Pro early access until October 25, 2026, then free with any account.

Make your own silicone mold →

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.

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 is the bubble tower different from the bubble cube?

It is two bubbles wide instead of three and four bubbles tall instead of three, so it is slimmer and taller: 42 by 42 by 77 mm against the cube's 61 mm on every side. It uses less wax and suits a narrow shelf or a candle trio.

Does the bubble tower candle burn down evenly?

Use a wick sized for a 40 mm pillar and let each burn last until the melt pool reaches the sides of the bubbles. The waists between the bubbles are narrower, so the top bubbles hollow out first, which is part of the look.

How much wax does one bubble tower candle take?

About 96 g of pillar wax per candle. The silicone mold is made once, from about 242 ml of silicone, and then casts candle after candle; it does not need to be printed again.