![]() The first time I tried using them they broke from the force of the Borax expanding inside of them. I tried cooking recipe 2 and 3 with the charcoal method but found they didn’t get hot enough to develop much strength. If it has any cracks it will fail if you use it. If everything went well you should have a crucible that sounds kind of like a coffee cup when you flick it with your finger. Run the hair dryer for about an hour longer then let the whole thing cool in place over night. ![]() Let it run until the coals have burned down about half way and add a few more on top. Once they are glowing red hot you can put the dryer duct in place and start the hair dryer on low. Place it on something so you can fit the dryer duct under it. Fill the rest of the chimney starter with charcoal. Place the crucible in the middle of the chimney starter. Place the charcoal in the bottom of the chimney starter. ![]() Get some charcoal, a chimney starter, a bit of dryer duct and a hair dryer to cook your crucible. This will help to burn off all the stuff in the clay that can contaminate the metal you may be melting and it will set the clay to make the crucible stronger. After your crucible has dried you will need to cook it before you use it. ![]()
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