Barrel Firing is one of many alternative firing techniques used to create abstract, natural effects on pottery.    Greenware pottery (unfired) is sanded and buffed, then coated with a special clay slip called Terra Sigilatta and then buffed again.  A  smooth, shiny surface is important at this stage because there will be no glaze applied to finish the piece.  Pots are then Bisque-fired before being placed into a 55 gallon barrel along with wood shavings and various additives, which produce distinctive color effects.  Black comes from the smoke. Greens come from copper powder we throw in the kiln; browns, I think, come from coffee grounds and or rock salt; reds come from iron oxide.  No two pieces could ever be  exacly alike.

 

After the combustible materials are lit and allowed to burn for 8-12 hours until cool, the pieces are removed, wiped off, waxed and buffed.  The results are beautiful to my eye...and I hope yours.   If not, you have no taste and should buy your home decor from Walmart.  (har har)