Hollow Forms Bundle This bundle includes the essential materials and tools needed to create strong, lightweight hollow forms in metal clay. Each component supports clean construction, proper venting, and reliable drying. Clay Tack provides secure bonds when connecting two pieces together in silver clay. Precision Hole Punches (Round 2.5 mm & 1.25 mm) create clean, accurately sized vent holes to allow gases to escape safely during firing. Wood Clay is ideal for building hollow forms, offering excellent workability, strength, and compatibility with metal clay techniques. Plastic Half-Round Drying Form supports curved shapes as they dry, helping pieces retain their form and reduce distortion or cracking. Together, these tools make it easier to design and construct hollow metal clay forms that are lightweight, structurally sound, and ready for successful firing.