<HTML><FONT FACE=arial,helvetica><HTML><FONT SIZE=2 PTSIZE=10 FAMILY="SANSSERIF" FACE="Arial" LANG="0">Chris,<BR>
<BR>
John pretty much parallels my findings and procedures over the years. The duration really varies from stock to stock. We know from experience that Ampex 2" quad stock generally speaking is a long duration baking procedure. Memorex Chroma 90 to a slightly lesser extent. 3M 400 is all over the map depending on when it was manufactured. Some of the 3M 1" is now also experiencing this problem.<BR>
<BR>
David Crosthwait<BR>
<BR>
</FONT><FONT COLOR="#000000" BACK="#ffffff" style="BACKGROUND-COLOR: #ffffff" SIZE=1 PTSIZE=8 FAMILY="SANSSERIF" FACE="Arial" LANG="0">DC Video <BR>
Archived Media Transfer & Re-mastering Services<BR>
177 West Magnolia Blvd.<BR>
Burbank, CA. 91502<BR>
818-563-1073<BR>
818-563-1177 (fax)<BR>
818-285-9942 (cell)<BR>
DCFWTX@AOL.COM <BR>
DAVID@DCVIDEO.COM<BR>
<A HREF="WWW.DCVIDEO.COM">WWW.DCVIDEO.COM</A></FONT><FONT COLOR="#000000" BACK="#ffffff" style="BACKGROUND-COLOR: #ffffff" SIZE=2 PTSIZE=10 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
<BR>
<BR>
<BR>
<BR>
In a message dated 2/1/2010 6:55:19 AM Pacific Standard Time, jwalko@scenesavers.com writes:<BR>
<BR>
<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Chris:<BR>
<BR>
You’ll probably get different answers talking to different people.<BR>
<BR>
<BR>
<BR>
We’ve found that longer (to a certain extent) is better…especially for larger (i.e. Quad) formats. We typically process for as much as 36 hours…but I’ve heard others using shorter times. I spoke to an audio engineer who “bakes” audio tapes and he only processes them for 4 hours.<BR>
<BR>
<BR>
<BR>
A couple of notes…baking is not done as a matter of course. Other solutions are attempted first, such as cleaning and storing in a cool, dry environment for an extended period (maybe 2 or more weeks). The idea is to remove as much as the humidity/moisture from the tape without over drying it (a certain amount of moisture is required in the tape for it to be playable…for the lubricant in the tape to work, etc.). As a side note…there is another thread going on another list server that is discussing freezing magnetic media. I’ve not read these too closely, but from what I understand, magnetic media should never, ever be frozen. I think the IPI may have even done a study about this and found that tapes that were frozen couldn’t be recovered…I’ll have to see if I can find that article (I may be remembering this wrong…).<BR>
<BR>
<BR>
<BR>
Regarding ovens…I’ve heard of people home building solutions using Coleman coolers, a 100 watt light bulb and a thermostat. The person who built this told me he is able to maintain a steady temperature within 3 degrees. Any industrial oven capable of holding a steady, low temperature would work…but, it must be capable of relatively low temperatures…in the 115-130 degree range…standard ovens, as previously mentioned, won’t work.<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
John Walko<BR>
<BR>
Media Archive Manager<BR>
<BR>
Scene Savers<BR>
<BR>
<A HREF="http://www.scenesavers.com/">www.scenesavers.com</A><BR>
<BR>
800-978-3445<BR>
<BR>
<BR>
<BR>
<B>From:</B> quadlist-bounces@quadvideotapegroup.com [mailto:quadlist-bounces@quadvideotapegroup.com] <B>On Behalf Of </B>Chill315@aol.com<BR>
<B>Sent:</B> Monday, February 01, 2010 9:44 AM<BR>
<B>To:</B> quadlist@quadvideotapegroup.com<BR>
<B>Subject:</B> Re: [QuadList] Video Tape Baking<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
I do not do any restoration and do not have access to a quad. But I wanted to understand the procedure. <BR>
<BR>
<BR>
<BR>
<BR>
<BR>
So did you make a special oven type device? How long does it take?<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
Chris Hill<BR>
<BR>
<BR>
WA8IGN<BR>
<BR>
<BR>
<BR>
<BR>
_________<BR>
</FONT></HTML>