MJ Arsenal Premium Full Weld Cold Start Quartz Banger – Opaque

A cold start dab, sometimes called a reverse dab, is a technique where concentrate is loaded into the banger before any heat is applied. The user then applies heat to the outside of the bucket until the concentrate begins to melt and produce vapor, then places the carb cap on and inhales. This method reduces the risk of overheating concentrates and is especially effective for preserving delicate terpene flavors at lower temperatures.

The 53mm depth is specifically designed to keep concentrate at the bottom of the bucket during cold start sessions. When you heat from the bottom up, concentrate needs to be far enough from the top opening that vapor builds inside the bucket before escaping. The extra depth also allows more room for a carb cap to sit and trap vapor, improving the efficiency of each dab.

The opaque white quartz base distributes heat more evenly across the bottom surface compared to clear quartz, which can have slight inconsistencies in heat distribution when used for cold start sessions. The dense, milky material also glows subtly when heated to extreme temperatures, providing a visual cue to avoid overheating. For cold start dabbing, the even heat floor of an opaque base means concentrate melts uniformly without scorching one side first.

Use a dab tool to place your concentrate at the bottom of the bucket before touching any heat source. Apply your torch to the outside lower portion of the bucket, moving it in slow circles to heat evenly. Once the concentrate begins to bubble and vapor forms, apply a carb cap and inhale slowly. Remove the heat source once the dab is actively vaporizing to stay in the low-temperature range.

A carb cap that fits the 20mm outer diameter opening of this bucket is recommended. Bubble carb caps and directional caps both work well with cold start bangers. A well-sealing cap is important for cold start sessions because the lower heat level requires a fully restricted environment to build adequate vapor pressure for a satisfying hit.

Yes, full weld construction is particularly valuable for cold start bangers because the technique involves heating the bucket from a cold state repeatedly, which creates more thermal cycling stress than traditional heat-and-wait methods. The seamless full weld joint is less susceptible to cracking at the connection point than standard weld designs, making this banger a more durable option for regular cold start use.