Re: [ATM] What a wonderful sound!

["Bill Wheaton" <junkwheaton@gmail.com>]

Wow, thanks Mark.  Being a rank tyro, that is exactly the kind of critique I
am looking for.  The last thing I want is astigmatism.  I've had to live
with that in my eyes for years, and its no fun. I'll look at my video with
new eyes, and see.

Typically, I take between 16 and 20 steps around the barrel.  And bear in
mind that the video was a condensed one so that I was demonstrating the
round and round technique vs the back and forth technique I was trying.

With the round and round oval technique, I stand in one spot and do three or
four lighter ciruits around the edge, and then three or four heavier
circuits 1 inch in from the edge, and then two or three heavier circuits
about the center. Then I step to the left and repeat it, all at about the
speed you saw.

With the back and forth movement I start on the left with short strokes,
then do longer ones as I move to the right, ending up on the right with
shorter strokes.  Then I go back to the left doing the same thing.  I then
take a step to the left and repeat it all.

I'm not sure which is better, or if there are other better ways.  The
techniques for hogging the basic shape that I have run across seem kind of
vague to me.  From what I have read it's more of a matter of "Do whatever it
takes to get rid of a lot of glass fast", without much detail other than
"rub, rub, rub", or "go get an electric diamond grinder and have at it".

-Bill

On Sat, May 3, 2008 at 11:02 PM, Mark Holm <markholm@verizon.net> wrote:

> I haven't done small tool grinding, but I think I see a problem anyhow.
>  You are not nearly uniform enough in round the
> barrel movement.  If you keep doing like I saw, you will be wildly
> astigmatic, wildly enough to be a problem even in
> smoothing.  You will never get as nearly stigmatic with a small grinding
> tool as with full size, but at hogging time, it
> isn't a problem unless you are wildly out.  So, get more uniform about the
> round the barrel movement, but don't obsess
> about it.  It's a practice that will be needed later anyhow, so you might
> as well get in the habit now.
>
> Mark Holm
> markholm@verizon.net
>
> Bill Wheaton wrote:
> > Does it look
> > like I am I doing it right?
>
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