I note some comments on finding bushings to help centering grinding
wheels on hand grinders..

Please, the stone does not need bush on the shaft to fit properly.
A proper fitted stone is held by the washers up on the sides of the
stone..

To center it merely put a piece of 2x4 in your vice and
clamp the grinder to it so the stone is in a horizontal
position. Lightly mount the stone using blotters or pieces of
cardboard and concave washers  ( flat will work as well),
then make a simple gauge on the bench and rotate the stone until it is
equally spaced all around then draw the nut up tight,

When starting the process,if the stone is not level you can make 
cardboard shims to get it correctly level and then proceed as
above.

If the shaft is bent  your dead...
but I do have a shaft straightening process if you need it.

stop trying to find bushings, simply not needed...
-- 
Tom Thornton
Cincinnati #3, F&AM , Morristown, N.J., USA
Collector of old tools, specializing in hand cranked grindstones

Tom Thornton wrote:
> 
> I note some comments on finding bushings to help centering grinding
> wheels on hand grinders..
> 
> Please, the stone does not need bush on the shaft to fit properly.
> A proper fitted stone is held by the washers up on the sides of the
> stone..
> 
> To center it merely put a piece of 2x4 in your vice and
> clamp the grinder to it so the stone is in a horizontal
> position. Lightly mount the stone using blotters or pieces of
> cardboard and concave washers  ( flat will work as well),
> then make a simple gauge on the bench and rotate the stone until it is
> equally spaced all around then draw the nut up tight,
> 
> When starting the process,if the stone is not level you can make
> cardboard shims to get it correctly level and then proceed as
> above.

Sounds like a good technique to centre a round wheel. Any advice
on mounting then dressing (or vice versa) a worn (unround)
wheel?

	BugBear

: -----Original Message-----
: From: owner-oldtools@l...
: [mailto:owner-oldtools@l...]On Behalf Of
: paul womack
: Sent: 22 March 2002 09:49
: To: tomthornton@n...
: Cc: a old tools
: Subject: Re: Centering grinding wheels
:
: Sounds like a good technique to centre a round wheel. Any advice
: on mounting then dressing (or vice versa) a worn (unround)
: wheel?

A diamond is the best solution, though you need to avoid heavy pressure
that might rip the stone from the mounting.

Star wheels can, I suppose, trim a badly-out wheel, though in this case
you do need pressure. Difficult to apply to an eccentric wheel. Not a
good idea for hand-cranked wheels.

One traditional approach was/is to use the end of a section of heavy
gauge steel tubing, with a sort of gouge-wise action.

Wear at least a face mask!

Jeff
-- 
Jeff Gorman, West Yorkshire, UK
Jeff@m...
http://www.millard.demon.co.uk/index.htm