Aluminum Bath Bomb Molds 6-Pack — 3D Sphere DIY Kit

Built for makers who hate re-doing things

• Solid aluminum alloy construction

  Unlike silicone or plastic, aluminum alloy holds a perfectly true sphere even under the pressure of dense bath bomb mixture. The matte brushed interior resists sticking and wipes clean in seconds — no sprays, no liners needed.

• Flanged rim clam-shell closure

  The precision-machined flanged rim locks both halves flush so no mixture seeps out at the seam during setting. When it is time to open, the halves separate cleanly — no prying, no cracking, no ruined surface.

• Six molds, multiple sizes per pack

  Six pieces in one pack spanning multiple sizes means you can run a full batch of bath bombs or cake pops in a single session without waiting to re-use a single mold. Batch more, waste less time.

The numbers behind the kit

• 6pcsmolds included per pack for full-batch sessions
• 3Dperfect sphere output every press, every batch
• 2-partclam-shell halves snap together and release cleanly
• 4+bath bombs, cake pops, truffles, wax spheres & more

From powder to perfect sphere in 4 steps

1. 1
   Mix your recipe

   Combine your bath bomb dry ingredients (baking soda, citric acid, cornstarch) in a bowl, then slowly drizzle in your wet ingredients (oils, colorants, fragrance). The mixture should hold its shape when squeezed — not too wet, not too crumbly.

2. 2
   Overfill each half

   Pack the mixture firmly into both hemisphere halves, mounding it slightly above the rim of each half. The excess is what creates a tight, gap-free seam when the two halves press together.

3. 3
   Press and lock the flanged rim

   Align both halves and press firmly so the flanged rims meet flush. Twist slightly if needed to secure. The metal rim locks the halves closed so the sphere sets without cracking or splitting at the equator.

4. 4
   Unmold and admire

   After 5–10 minutes (or longer for denser mixtures), gently twist the halves apart. The sphere should release cleanly from the smooth aluminum interior. Let it cure on a rack for a few hours before packaging or gifting.

From lumpy to perfectly round, every single time

The problem with plastic molds

Cheap plastic bath bomb molds warp under moisture, crack after a few uses, and leave visible seam lines that ruin the finish. You pack the mixture in carefully, unmold with fingers crossed, and still end up with a flat side or a ragged equator. The same story plays out with cake pops and chocolate truffles — soft, inconsistent shapes that never look quite right.

Metal changes everything

Solid aluminum alloy holds its shape batch after batch. The two-piece clam-shell design features a flanged rim that locks the halves together during setting, then releases cleanly so your sphere pops out looking like it came from a professional chocolatier or a spa boutique. Six molds per pack means you can press, fill, or cast a full tray in one session.

One kit, endless creations

Bath bombs for a self-care Sunday. Cake pops for the school bake sale. Chocolate truffles for a holiday gift box. Decorative wax spheres for the coffee table. The same durable molds handle all of it — season after season, project after project — without wearing out, warping, or losing their precision.

Keep your molds in shape

• Hand wash only

  Rinse with warm soapy water after each use. Avoid the dishwasher — prolonged heat cycles can dull the interior finish over time.

• Dry immediately

  Towel-dry or air-dry fully before storing. Although aluminum does not rust, trapped moisture can leave water marks on the interior surface.

• Store assembled

  Snap the halves together when storing so the rims stay aligned and the interior surface stays protected between crafting sessions.

Aluminum vs plastic vs silicone molds