[TheForge] Re: Air Hammers Paul

Mon Apr 7 22:10:05 2003

You got it, never used twice, because it actually all passes through the
ingot, can you imagine rethreading the thing if the wire broke???

Actually honest to god some genius made the thing self threading, although I
have never seen it done.

----- Original Message -----
From: "Mike Spencer" <[email protected]>
To: <[email protected]>
Sent: Monday, April 07, 2003 7:53 AM
Subject: [TheForge] Re: Air Hammers Paul

> > The silicon wafers your computer are made from, are cut using a wire
> > saw, the wire saw has 4 drums and 360 miles of wire wrapped on the
> > drums an spools in grooves, to cut wafers .040 thick it cuts up to 700
> > wafers from a single ingot.
>
> Very interesting.  I didn't know that.
>
> Lessee, 360 miles, 2 runs for each cut... mutter mumble...
> That would be 1300 feet between capstans.  So I guess that means the
> wire is fed onto the drums, makes 700 or so turns and then passes off
> to be discarded.  Is that right?
>
> - Mike
>
> --
> Michael Spencer                  Nova Scotia, Canada
>
> [email protected]
> http://home.tallships.ca/mspencer/
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