On Oct 8, 13:36, Jan Koller wrote:
>
> > Anneal - is that where you heat it up & hit it with a hammer? Or do you
> > just heat it up and let it cool again? I forget now... It's been a long
> > long time since I had any metalwork lessons.
>
> Heat to cherry red, then cool very slowly, often covered in lime, IIRC,
> to hold the heat in. The very slow cooling keeps the metal soft, vs
> cooling quickly ( quenching ) to harden.
For mild steel, yes. You need to let it "soak" in the heat for about an
hour per inch of thickness for it to be fully effective, too.
For other metals, the temperatures vary and the slow cooling is usually
unnecessary. In fact, for mumetal (as used for magnetic sheilding) the
typical annealing temperature (to get the best magnetic properties in this
case, rather than greatest malleability) is in the region of 1250 C to 1600
C (cherry red is about 800 C), and it's supposed to be quenched very
rapidly to preserve the fine grain structure. For copper, the annealing
temperature is between 400 C and 750 C depending on impurities and how it
was hardened, and it doesn't make much difference whether it's quenched or
not.
--
Pete Peter Turnbull
Network Manager
University of York
Hello Everyone,
I have a question:
Someone on Ebay is selling a Vaxserver 3100 model 10.
The question is: what is the difference betwen a vaxserver and a vaxstation
3100? This wil be my first vax system. Is this a good one to grab?
I'm new to this, so any help would be apreciated.
> Hello Everyone,
> I have a question:
> Someone on Ebay is selling a Vaxserver 3100 model 10.
> The question is: what is the difference betwen a vaxserver and a vaxstation
> 3100? This wil be my first vax system. Is this a good one to grab?
>
> I'm new to this, so any help would be apreciated.
The only *physical* difference is the lack of graphics hardware on the
VAXserver, however, the more important difference is that a VAXserver
requires different licenses than a VAXstation. This isn't that important if
you're using a Hobbyist license though. Where this becomes important is if
you've got a VAXstation with Commercial licenses and try to run it headless
and without a keyboard (at which point the OS thinks it's running on a
VAXserver).
As for if it's a good system to grab, it's not a bad system, but there are
better, and the external SCSI port is probably non-standard (requireing a
special DEC cable. I'd personally recommend a VAXstation 4000/VLC as a
first VAX. OTOH, the 3100m10 should hopefully go for next to nothing, which
does make it attractive. Plus you can temporarily hook a CD-ROM up to the
internal SCSI cable to load VMS.
Zane
> I am still looking for the Digital Alpha 233 MHz 21066A CPU. I am
> interested
> in buying it or swapping it for the following Alpha hardware:
>
> 1x Digital Alpha 233 MHz 21064BB CPU
> 1x Digital Alpha 266 MHz 21164AA CPU
Both of these are faster than the 21066A CPU. Perhaps you should look
for a motherboard for either of these processors instead of the 21066A
CPU.
--
Eric Dittman
dittman(a)dittman.net
Check out the DEC Ethusiasts Club at http://www.dittman.net/
> > > 1x Digital Alpha 233 MHz 21064BB CPU
> > > 1x Digital Alpha 266 MHz 21164AA CPU
> >
> > Both of these are faster than the 21066A CPU. Perhaps you should look
> > for a motherboard for either of these processors instead of the 21066A
> > CPU.
>
> I did look for m/b for these, but they seem to be used only in
> AlphaStations/Server. If you know of an OEM board that takes them I'd be
> very interested to learn its part number/model name.
The 21064 should work in a PC64 and the 21164 should work in either an
EB164 or PC164. I've got extra PC64, EB164, and PC164 motherboards but
you're overseas so finding one nearer to you would probably be cheaper.
--
Eric Dittman
dittman(a)dittman.net
Check out the DEC Enthusiasts Club at http://www.dittman.net/
I know of someone that has a Pro350 available. If anyone is
interested, please let me know and I'll forward you their
email address.
--
Eric Dittman
dittman(a)dittman.net
Check out the DEC Enthusiasts Club at http://www.dittman.net/
This weekend I picked up an OPUS 300PM, which from what I
can gather is a Fairchild Clipper computer on an ISA card.
All I have is the card -- no manuals, documentation or software,
so any pointers to further information on this card would be most
welcome.
The card is silkscreened with a date of 1987, so it is on-topic.
Cheers,
Dan
Hello All,
I own a pair of DEC TK50-GA external SCSI tape drives which I'd like to use as storage on my PC (Windows 98).
Can anyone tell me:
1. if this is possible
2. if possible, what hardware/software is required
3. source(s) of required hardware/software
Kevin Wright
Email: callwright(a)earthlink.net
I am looking for a RS/6000 POWERserver 930 or
equivalent. So if there is anyone here in the
Netherlands or a nearby country who is looking to give
one away, please contact me at my email address. This
would just be a hobby machine to add to my small
collection of "old stuff" and learn a bit on the way.
Bill S.
Amsterdam, NL
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