re: air bearings was Re: Air spindles

Ian wrote:

>I didn't even realise that air bearings were used in such things but
>this is very interesting - I must have a play around with that idea!

Ian,

Air bearings are one of those "simple concept, difficult execution"
type projects. It is one of the great balancing acts of technology.
Pun intended. A rather new approach is the use of porous graphite to
release the air into the 'space between'. This overcomes some of the
limitations of the standard "small holes" approach Jon E described
(as used in his Westwind spindle).

It's fun to play with! And variations can be VERY useful. Like the
guy who used an 'airbag platform' and a shopvac to "float" the
refrigerator into place over the newly installed lino floor. Works
for heavy tools too!

Ballendo



Ballendo