[sdiy] OT- cleaning off serial number...

[Grant Richter]

Here's a trick that a fellow from Texas Instruments told me. It MIGHT
help???? Be very careful!!!!

This is about chips, the process of printing the numbers on chips alters the
chemistry of the plastic around the numbers. So if the numbers have come
off, you can sometimes get them back by applying the flame of a butane
lighter briefly to the chip top. It may be that a heat gun will also work
and be safer.

The basic idea is that the ink changes the chemistry of what it is printed
on and leaves a residual image, even after the ink is gone.

From: "Barry L. Klein" <Barry.L.Klein at wdc.com>
Date: Wed, 26 Jun 2002 15:19:31 -0700
To: synth-diy at dropmix.xs4all.nl
Subject: [sdiy] OT- cleaning off serial number...



Along these lines.... I accidentally wiped a cleaning rag
across my Memorymoog's serial number - written in Sharpie
ink... Any trick to determine what was originally there -
as its totally gone now...

Barry 

-----Original Message-----
From: tpaddock at seanet.com [mailto:tpaddock at seanet.com]
Sent: Wednesday, June 26, 2002 6:42 AM
To: synth-diy at dropmix.xs4all.nl
Subject: [sdiy] OT- repair clear plastic knob

I just got a signal generator and I was
taking the knobs off to clean under them.
Everything was fine till I had the thought:
"I gotta be careful, this knob might break if I drop
it on the hard floor. That would be a bummer."

So... 
It's the clear plastic dial-skirt-bezel-thing that's
cracked. No missing pieces, just a crack, just a big
nasty ugly crack. Here's one just like it on ebay.
You can see what the knobs look like.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem=1361497056
<http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1361497056>
Or search for item 1361497056

I'd like to fill the crack with something so light
doesn't reflect off it and it won't be so visible.
Doesn't have to be strong.
I can use a vacuum chamber if that helps.

The good news is that it works. Freq range is
1mHz-1.999999999MHz, so I thought it would make a
good LFO, tuning standard, and ring mod carrier.

Thanks, 
Toby Paddock 



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