The versatile and stackable Dogbone molds are back in stock . The Dogbone is made from high quality HDPE and will not warp when used with high heat resins! You can stack as many as six (6) Dogbone molds in a pressure pot if using one. Or just use one of these molds to create your own pen blanks using either Polyester Resin (without a pressure pot), or Alumilite casting resin!