22 Apr
2011
22 Apr
'11
2:40 p.m.
http://www.mhtest.com/ has done it before, maybe you won't even have to send them your
boards :)
For many purposes I think I'd be happy with a good 600 DPI color scan of both sides
(including silkscreen). I don't think that modern PCB processes will by default
produce a board that "looks like" an Altair era board (I remember the silkscreen
actually covering tinned solder pads.)
22 Apr
22 Apr
2:52 p.m.
On 22 Apr 2011 at 14:40, Shoppa, Tim wrote:
For many purposes I think I'd be happy with a good
600 DPI color scan
of both sides (including silkscreen). I don't think that modern PCB
processes will by default produce a board that "looks like" an Altair
era board (I remember the silkscreen actually covering tinned solder
pads.)
It might--you'd just have to leave off the resist and print the
silkscreen on the bare tinned board.
--Chuck
4:02 p.m.
What about places that can take existing PC board films and run new
boards from them, anyplace that still works with full sized pc board films?
Shoppa, Tim wrote:
http://www.mhtest.com/ has done it before, maybe you
won't even have to send them your boards :)
For many purposes I think I'd be happy with a good 600 DPI color scan of both sides
(including silkscreen). I don't think that modern PCB processes will by default
produce a board that "looks like" an Altair era board (I remember the silkscreen
actually covering tinned solder pads.)
4:02 p.m.
ooops, never mind I just went to the mhtest site, and I see they do just
that... okay....
Shoppa, Tim wrote:
http://www.mhtest.com/ has done it before, maybe you
won't even have to send them your boards :)
For many purposes I think I'd be happy with a good 600 DPI color scan of both sides
(including silkscreen). I don't think that modern PCB processes will by default
produce a board that "looks like" an Altair era board (I remember the silkscreen
actually covering tinned solder pads.)
5:26 p.m.
On Fri, 22 Apr 2011, Dave McGuire wrote:
On 4/22/11 2:40 PM, Shoppa, Tim wrote:
Didn't Grant Stockly(ley?) do a full board set a few years ago for the
Altair?
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.simpits.org/geneb - The Me-109F/X Project
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://www.scarletdme.org - Get it _today_!
Political correctness is a doctrine, fostered by a delusional, illogical
minority, and rabidly promoted by an unscrupulous mainstream media, which
holds forth the proposition that it is entirely possible to pick up a turd
by the clean end.
For many purposes I think I'd be happy with a
good 600 DPI color scan
of both sides (including silkscreen).
I'd love copies of those scans, if they end up being done.
23 Apr
23 Apr
12:42 a.m.
On 4/22/11 5:26 PM, Gene Buckle wrote:
Didn't Grant Stockly(ley?) do a full board set a few years ago for the
Altair?
I believe so, but was that a redesign, or exact duplicates of the
original boards?
-Dave
--
Dave McGuire
Port Charlotte, FL
For many purposes I think I'd be happy with a good
600 DPI color scan
of both sides (including silkscreen).
I'd love copies of those scans, if they end up being done.
12:58 a.m.
On 4/23/11 12:52 AM, Alexandre Souza - Listas wrote:
I think it'd be good to have an archival scan of the original PCB
artwork. Sure, I (myself) would eventually want to turn them back into
Gerbers and maybe make a set, but that's not really the point.
-Dave
--
Dave McGuire
Port Charlotte, FL
I believe so,
but was that a redesign, or exact duplicates of the
original boards?
Why "duplicate" the original boards? Can't them be redrawn? 
10:06 a.m.
On Apr 23, 2011, at 12:58 AM, Dave McGuire wrote:
On 4/23/11 12:52 AM, Alexandre Souza - Listas wrote:
I think it'd be good to have an archival scan of the original PCB artwork. Sure, I
(myself) would eventually want to turn them back into Gerbers and maybe make a set, but
that's not really the point.
-Dave
Scans are easy, and I plan on submitting a full set to Bitsavers. But I am looking to go
beyond that and provide Gerber and drill files so that anyone can have real boards made.
Ideally I want these to resemble the original boards as much as possible, flaws and all.
You also have to remember that when these boards were originally designed, there were no
PCB CAD programs available. Everything was laid out with tape and mylar on a light table.
You could redraw them using todays PCB layout tools and the result would be electrically
correct but they would be far from accurate reproductions.
I've already received one quote from a company in Florida. They want a little over
$1800.00 per board to do the work. I also know about Mile High. That is the outfit that
did the reproduction work for Grant Stockly's kits. Still waiting on some more
quotes...
-Mardy
I believe
so, but was that a redesign, or exact duplicates of the
original boards?
Why "duplicate" the original boards? Can't them be redrawn? 
10:59 a.m.
Scans are easy, and I plan on submitting a full set to
Bitsavers. But I am
looking to go beyond that and provide >Gerber and drill files so that
anyone can have real boards made. Ideally I want these to resemble the
original boards >as much as possible, flaws and all.
I don't think this is a "sane" (in the lack of a better word, sorry if
you find it annoying or offensive) way to reproduce a classic computer. Of
course, a bona fide reproduction would be nice, but what about a
reproduction not so perfect but electrically identical? I think it would be
an easier way of doing that
BUT (and there is always a but) you can reproduce these boards at home,
using toner transfer, if you have the proper scanned PDFs, no need for
gerbers/drills. Thats an interesting point of view.
You also have to remember that when these boards were
originally designed,
there were no PCB CAD programs >available. Everything was laid out with
tape and mylar on a light table. You could redraw them using todays PCB
There is ONE autorouter that does that, but I don't remember the name
now.
layout tools and the result would be electrically
correct but they would
be far from accurate reproductions. I've already received one quote from a company in
Florida. They want a
little over $1800.00 per board to do the >work. I also know about Mile
High. That is the outfit that did the reproduction work for Grant
Stockly's kits. Still >waiting on some more quotes...
I'd happly do that at home for half the price :oP
11:50 a.m.
On Sat, 23 Apr 2011, Dave McGuire wrote:
On 4/22/11 5:26 PM, Gene Buckle wrote:
Didn't Grant Stockly(ley?) do a full board set a few years ago for the
Altair?
I believe so, but was that a redesign, or exact duplicates of the original
boards?
If I recall correctly, it was a 100% copy, but the silk screen was
improved in some ways (positioning mostly).
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.simpits.org/geneb - The Me-109F/X Project
ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://www.scarletdme.org - Get it _today_!
Political correctness is a doctrine, fostered by a delusional, illogical
minority, and rabidly promoted by an unscrupulous mainstream media, which
holds forth the proposition that it is entirely possible to pick up a turd
by the clean end.
For many purposes I think I'd be happy with a good
600 DPI color scan
of both sides (including silkscreen).
I'd love copies of those scans, if they end up being done. 
22 Apr
22 Apr
6:05 p.m.
actually seems like something appropriate for inclusion with the manuals
on bitsavers.....
steve
On 4/22/2011 1:07 PM, Dave McGuire wrote:
On 4/22/11 2:40 PM, Shoppa, Tim wrote:
For many purposes I think I'd be happy with a
good 600 DPI color scan
of both sides (including silkscreen).
I'd love copies of those scans, if they end up being done.
-Dave
4840
days inactive
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12 comments
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participants (8)
-
cclist＠sydex.com -
curt＠atarimuseum.com -
geneb＠deltasoft.com -
mardy＠voysys.com -
mcguire＠neurotica.com -
pu1bzz.listas＠gmail.com -
shumaker＠att.net -
tshoppa＠wmata.com