RAYNAG Set of 2 Acrylic Seashell Candle Making Mold Soap Bath Bomb Making Kits, 3D Scallop Shaped DIY Craft Fondants Molds

Candles look amazing but really hard to unmold.

All good

Small one is fine but the big shell mold needs to be made better. It leaks easily even if I tighten the elastic band with two rounds.

Both molds leak. I have wasted lots of wax using them. I watched YouTube videos and followed instructions to avoid leakage but none of the suggestions work. I tried adding loctite fun tak mountain tabs to the bottom to help seal but that didn't work. So now I add a bit of hot wax which leaks out, then I let it dry to use as a seal. After that I add hot wax to fill the rest of the mold and this is the only way I can get it to work. It's a mess and not ideal but I am strapped for time and need to have these candles done ASAP.