Globe Valves A Method of Making Patterns: Peter King writes a tale of summer sunshine to cheer you

摘要

I had been considering making my own globe valves instead of buying them ready made (tight 'b*d'), but found the first major difficulty to be forming the sphere for the main part of the body. Much idle thought had gone into this at various times, weighing the pro's and cons of making patterns ... fabricating or chewing them out of the solid.