Reuse & Remelting Guide
Get up to 10 uses per block — here's exactly how to remelt, reform, and maintain calibration across multiple uses.
The Case for Reusable Gel
Traditional organic gelatin is single-use. It degrades within hours, requires refrigeration, and a used block goes in the trash. At $100–$500 per block, single-use testing gets expensive fast.
Clear Ballistics synthetic gel is designed from the ground up to be remelted and reused. With proper technique, a single block can be used up to 10 times while maintaining FBI calibration standards. Over a year of regular testing, that's 90% savings on gel cost.
Required Equipment
- Gel Cooker — A dedicated Clear Ballistics gel cooker (5 lb or 18 lb capacity) or a commercial roaster oven. Target temperature: 220–240°F (104–115°C). Do not use a standard kitchen oven — uneven heat creates hot spots that degrade the gel.
- Original Mold — The mold your block was originally formed in. Remelting works best when you return the gel to its original shape.
- Needle-nose pliers or forceps — For removing bullet fragments and jacket material before remelting.
- Heat-resistant gloves — Gel at melt temperature is extremely hot.
- Thermometer — Optional but recommended to confirm the gel is fully molten before pouring.
The Remelting Process
- Recover the projectile and fragments. Before remelting, use forceps to remove all recovered bullet material from the wound channel. Lead particles left in the gel will contaminate future batches and degrade clarity.
- Break the block into pieces. Cutting or breaking the block into smaller chunks speeds up the melting process significantly. A hand saw or serrated knife works well.
- Load the cooker. Place the gel pieces into your gel cooker. Do not overfill — leave room for expansion.
- Heat to 220–240°F. Set your cooker to the target temperature. It typically takes 45–90 minutes to fully melt, depending on block size. Stir occasionally to ensure even heating.
- Do not boil. If the gel begins to bubble aggressively, reduce heat. Boiling introduces air bubbles and degrades clarity. The gel should be smooth and pourable, not agitated.
- Pour into the mold. Once fully liquid, carefully pour the gel into your mold. Fill to the brim and place on a level surface.
- Allow to fully cool. Let the block cool at room temperature for a minimum of 24 hours before handling. 48–72 hours is ideal for larger blocks. Refrigeration can speed setting but is not required.
- Re-verify calibration. After the block has fully set, re-check calibration with a BB test before your next ballistic test.
Microwaving creates extreme hot spots that chemically alter the gel's polymer structure. This permanently damages calibration and cannot be reversed. Always use a dedicated cooker or roaster oven with even, controlled heat.
When to Replace vs Remelt
| Condition | Action |
|---|---|
| 1–8 uses, clear gel, passes BB calibration | ✅ Remelt and reuse |
| Slight yellowing, still passes calibration | ✅ Remelt and reuse — normal |
| Heavy discoloration or cloudiness | ⚠️ Check calibration — replace if failing |
| 9–10 uses or significant fragmentation contamination | 🔄 Consider replacing the block |
| Lead contamination (gray tint, metallic particles) | ❌ Replace — calibration compromised |
| Fails BB calibration test | ❌ Replace — do not use for data testing |
Need a New Block or a Cooker?
Gel blocks, cookers, molds, and dye — everything you need for a complete testing setup.