Hello, I am currently coal burning a bowl out of wood. The Bowl came out wonderfully except when i started there was already a crack inside the bowl. Over the process of actually burning the bowl the crack sealed up but i didnt cool off the bowl immediately after words and the next day the...

Attached Photo is a Bowl that I made using the Techniques and tools found in a book by Patrick Spielman and Carl Roehl. You can achieve some cool grain patterns and unique shapes with this method. The rings of wood are cut out of a 3/4 to 1 in piece of wood with a scroll saw, glued and stacked...