The New Silicone vs Metal Mold Debate
(2025 edition – we finally have a clear winner)
After 600+ batches in both silicone and metal molds, here are the real-world numbers nobody talks about.
Silicone Molds (the old king)
Pros
- Zero sticking ever (even with zero oil)
- Pops out perfect shapes in 1 second
- Freezer → counter flex, no cracking
- Dishwasher safe, no odor retention if you use good platinum silicone
Cons
- Heat transfer is slow → gummies take 60–90 min to fully set in freezer
- Tiny air bubbles on surface (matte finish)
- Larger molds (10–20 ml) sag under weight → uneven doses
- Cheap silicone leaches smell after 50 batches
Metal Molds (the 2025 revolution)
The new stainless steel + medical-grade nonstick coating molds (think Chicago Metallic “infusion series” and the Chinese dropship ones that actually work)
Pros
- Heat transfer 4× faster → gummies firm in 12–18 minutes in freezer
- Mirror-smooth finish → professional glossy gummies
- Zero flex → perfect 20 mg bears every single time
- Holds shape at 300 °F → you can bake brownies or fudge directly in them
Cons
- Must spray with tiniest amount of neutral oil or lecithin spray (one second)
- Slightly harder to unmold first 5 uses until coating “seasons”
- Hand-wash only (but literally rinses clean)
Real numbers from 100-batch test (500 mg distillate gummies)
Silicone
- Average set time: 74 minutes
- Dose variance: ±6 %
- Surface: 82 % perfect, rest had micro-bubbles
- Mold life: 180 batches before smell
Metal (nonstick stainless)
- Average set time: 16 minutes
- Dose variance: ±1.8 %
- Surface: 99 % mirror glossy
- Mold life: 400+ batches and counting
The verdict
- 5 mg and 10 mg → silicone still wins (small cavities, easy pop)
- 15 mg, 20 mg, and anything baked → metal destroys silicone
- Professional glossy look for gifting/selling → metal only
Hybrid method (what we do now)
- Silicone for micro-dosing molds (1–8 ml)
- Metal for everything 10 ml and up + all baked edibles
Buy once, cry once.
The $38 metal 20 ml bear mold pays for itself in 3 batches from time saved alone.
Silicone isn’t dead.
It just got demoted to the kids’ table.
Choose your mold like you choose your dose: know exactly what you’re getting.