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From this I turned down a bushing for the bottom of the chair's
central "pipe", and fitted it (loosely) for a caged needle bearing.
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Copyright 1998- 2015, Doc's Machine & Airsmith Services. All Rights
Information contained in
these pages is for reference and entertainment
purposes only. Our methods are not always the best,
quickest, safest, or even the correct ones. It's up to you to know how
to use your own machines and tools.
Keep your fingers away from the spinny blades o' death and you should
be all right.