◆ Candle wax

Ribbed sphere candle mold

A 76 mm ribbed ball candle with 20 rounded ribs, as a silicone mold from a printed shell.

Make your own silicone mold
3D render of the ribbed sphere master fused on its printed charcoal base, between the orange and blue hugging shell halves
Candle wax ~244 g Pro early access

A ribbed sphere candle 76 mm across and 66 mm tall: a ball with 20 rounded ribs running from the foot to the crown, fading into a smooth top where the wick comes out, on a flat so it stands.

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Made with the hugging-shell mode of our silicone mold maker: print the base with the ball fused onto it and the two shell halves, pour about 351 ml of silicone, and the flexible mold that comes out peels off the rib flanks that would lock a rigid two-part mold at the seam.

The ribbed ball is one of the most popular modern candle shapes: pour it in cream, sage or terracotta and it looks at home everywhere. The zip carries every printed part, the ball 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 384 ml of silicone (mix it in one batch)
  • About 195 g of pillar wax per candle: each cast is 217 ml
  • Steel binder clips, tape or a hot glue gun
  • A primed wick for a 70 mm pillar, about 90 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 384 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 and slide each half off SIDEWAYS, not upward: the master is wider above its foot, so the base rib is left open for that. Then 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

7 h 40 minPrint time
~244 gFilament
9Printed parts
117 × 124 × 80 mmSize (W x D x H)
All print details
Print details
Cast materialCandle wax
Printed parts9
Size (W x D x H)117 x 124 x 80 mm
Print bed needed124 x 115 mm, 80 mm tall
Filament~244 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

Why is the ribbed sphere a silicone mold when the plain sphere is rigid?

A plain ball releases from a two-part print split through its middle. The ribs do not: at the sides of the split, each rib hooks behind the next one. Silicone flexes off them, so the ribs stay crisp all the way round.

Which wax gives the crispest ribs on the ribbed sphere candle?

A pillar wax or a paraffin blend poured at 75 to 80 C, with a little stearin for hardness. Container soy is too soft and rounds the ribs off. Tap the mold for a few seconds after the pour to bring up the air.

How much silicone does the ribbed sphere mold need?

About 351 ml, so mix 384 ml in one batch and pour it slowly into one corner so it flows round the ribs without trapping air. Each candle then takes about 195 g of wax.

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