Bluebird Potter's Tap and Die Instruction Manual
This old (1970s) instruction manual was for Bluebird Potter's Taps and Dies that we manufactured to enable potters to make threaded caps and stoppers for bottles and jars. The manual may be helpful if you have ever thought about making screw-tops for pottery. Much smaller taps (for cutting a female thread) and dies (for cutting a male thread) are most commonly used for cutting the fine threads used on nuts and bolts. Larger taps and dies were used in the past for cutting big threads in materials like wood and clay. We still have several sets of these potter's taps and dies at the pottery and use them occasionally in our production. Take a gander at how they are used on wet clay, a much different material than metal!
Screw On Top Instructions
Screw On Cap Instructions