[PSUBS-MAILIST] sphericity

[hank pronk via Personal_Submersibles]

Since Sphericity is very important, I am investigating 24-26 inch diameter heads to make a sub from a series  of small sphere's, up to 26 in dia.  I can buy over thickness heads and machine them in my own lathe to create  near perfect spheres.   I know I sound like a school girl that can't make up her mind what to wear.   Hank
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