Heat your overpour wax up to about 190 degrees F. Pour the wax into the mold to just cover the chunks.

Again, you can add dyes, fragrances, and additives to the overpour wax if desired. For this, we didn't use any. We used just straight paraffin (IGI-1343). It was selected as the overpour wax because it is fairly translucent and would allow the chunks to show through the wax a bit.

Optionally, you may vary the temperature of the overpour. By increasing the temperature, you can get the chunks to bleed a bit. By lowering it, you can introduce bubbles and surface texture.

Another option is to fill the mold only to the base of the chunks on the surface. The finished candle would then have chunks protruding through the top (candle would be in a top-up orientation versus the typical top-down).