28 Aug
2003
28 Aug
'03
6:08 p.m.
At 05:31 PM 8/24/2003 -0400, you wrote:
1 Lot of 25 3' inch polished Silicon Wafers
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2552753957
Are these commonly available at Bay area surplus shops?
I've got some old 3 inch wafers, but I'd like some big ones, too.
- John
28 Aug
28 Aug
6:31 p.m.
On Thu, 28 Aug 2003, John Foust wrote:
At 05:31 PM 8/24/2003 -0400, you wrote:
Not that I'm personally aware of.
--
Sellam Ismail Vintage Computer Festival
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1 Lot of 25 3' inch polished Silicon Wafers
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2552753957
Are these commonly available at Bay area surplus shops? 
10:04 p.m.
John and Sellam,
I ran across that item as I was searching out things on eBay. I posted it
because I remembered some of the list members discussing wanting
some of them. Someone would have to have gotten them and then
taken care of distributing them to the others, but that item has ended now.
Don't know if they were blank or etched yet. Still, you might email the seller
and see if he/she has anymore and would be willing to sell any individually.
Best Regards
At 05:48 PM 8/28/03 -0500, you wrote:
At 05:31 PM 8/24/2003 -0400, you wrote:
At 04:16 PM 8/28/03 -0700, you wrote:
1 Lot of 25 3' inch polished Silicon Wafers
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2552753957
Are these commonly available at Bay area surplus shops?
I've got some old 3 inch wafers, but I'd like some big ones, too.
- John On Thu, 28 Aug 2003, John Foust wrote:
At 05:31 PM 8/24/2003 -0400, you wrote:
Not that I'm personally aware of.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at
http://marketplace.vintage.org ] 1 Lot of 25 3' inch polished Silicon Wafers
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2552753957
Are these commonly available at Bay area surplus shops? 
10:38 p.m.
On Thu, 28 Aug 2003, John Foust wrote:
At 05:31 PM 8/24/2003 -0400, you wrote:
Those also appear to be 3" wafers. I was a little shocked to see how the
seller handled them, as even a tiny scratch or fingerprint is going to
cause problems if someone is going to etch one.
-Toth
1 Lot of 25 3' inch polished Silicon Wafers
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2552753957
Are these commonly available at Bay area surplus shops?
I've got some old 3 inch wafers, but I'd like some big ones, too. 
11:05 p.m.
With the Ronco Home Wafer Fab Line?
--John
On Thursday 28 August 2003 23:48 pm, Tothwolf wrote:
On Thu, 28 Aug 2003, John Foust wrote:
At 05:31 PM 8/24/2003 -0400, you wrote:
Those also appear to be 3" wafers. I was a little shocked to see how the
seller handled them, as even a tiny scratch or fingerprint is going to
cause problems if someone is going to etch one.
-Toth 1 Lot of 25 3' inch polished Silicon Wafers
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2552753957
Are these commonly available at Bay area surplus shops?
I've got some old 3 inch wafers, but I'd like some big ones, too.
29 Aug
29 Aug
1:13 p.m.
On Thu, 28 Aug 2003, J.C. Wren wrote:
On Thursday 28 August 2003 23:48 pm, Tothwolf wrote:
Most of the equipment is readily available on the surplus market. I've
come across many of the machines used for fab work at liquidation and
foreclosure auctions of fab and prototype/design companies. Generally they
seem to sell for under $100-150, though a couple went as high as $300-500.
The hardest part of doing home-fab work would probably be building some
type of clean room.
Folks have been rebuilding tubes at home for quite some time now, and it
seems like it won't be too long before you see the same thing with some of
the more simple semiconductors.
-Toth
On Thu, 28 Aug 2003, John Foust wrote:
With the Ronco Home Wafer Fab Line? At 05:31 PM 8/24/2003 -0400, you wrote:
Those also appear to be 3" wafers. I was a little shocked to see how
the seller handled them, as even a tiny scratch or fingerprint is
going to cause problems if someone is going to etch one. 1 Lot of 25 3' inch polished Silicon Wafers
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2552753957
Are these commonly available at Bay area surplus shops?
I've got some old 3 inch wafers, but I'd like some big ones, too. 
2:05 p.m.
----- Original Message -----
From: "Tothwolf" <tothwolf(a)concentric.net>
To: <cctalk(a)classiccmp.org>
Sent: Friday, August 29, 2003 2:23 PM
Subject: Re: 1 Lot of 25 3' inch polished Silicon Wafers
On Thu, 28 Aug 2003, J.C. Wren wrote:
Putting together a manual 3" wafer line probably would not be that expensive
IF you knew what you were doing, purchased everything at auction, bribed the
local authorities to let you keep the chemicals in your area, and had the
major power needed to run everything with. Clean rooms can be built cheaply
if it just a small area. Difusion ovens are kind of harder to do. Ultra pure
deionized water can be done but pricy for consumables. Laying down the mask
properly would be fun. This all assumes your just making 80's era chips.
The funny thing is its 1000% safer and probably cheaper to design a chip and
have somebody build them for you. This also assumes you have a design that
conforms with what the equipment cant do, and are knowledgable enough to
keep the equipment running and have the spare parts LOL.
On Thursday 28 August 2003 23:48 pm, Tothwolf
wrote:
Most of the equipment is readily available on the surplus market. I've
come across many of the machines used for fab work at liquidation and
foreclosure auctions of fab and prototype/design companies. Generally they
seem to sell for under $100-150, though a couple went as high as $300-500.
The hardest part of doing home-fab work would probably be building some
type of clean room.
Folks have been rebuilding tubes at home for quite some time now, and it
seems like it won't be too long before you see the same thing with some of
the more simple semiconductors.
-Toth On Thu, 28 Aug 2003, John Foust wrote:
With the Ronco Home Wafer Fab Line? At 05:31 PM 8/24/2003 -0400, you wrote:
> 1 Lot of 25 3' inch polished Silicon Wafers
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2552753957
Are these commonly available at Bay area surplus shops?
I've got some old 3 inch wafers, but I'd like some big ones, too.
Those also appear to be 3" wafers. I was a little shocked to see how
the seller handled them, as even a tiny scratch or fingerprint is
going to cause problems if someone is going to etch one.
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6 comments
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jcwren＠jcwren.com -
jfoust＠threedee.com -
mail.list＠analog-and-digital-solutions.com -
teoz＠neo.rr.com -
tothwolf＠concentric.net -
vcf＠siconic.com