It's sad to hear Peter passed away. His knowledge was extensive and his 
humor was in the best British tradition. I wonder if I have a picture of 
the thing somewhere. BTW, I didn't think about playing squealing tapes 
fast, that's a good idea, Thanks Richard. I'll try it next time a tape 
comes in that does that. I didn't think about it before but I now 
realize that all the tapes that squealed  were 3.75ips.
Shai

Mark Campbell wrote:
> Please tell us more about the "grandfather clock" tape recovery machine.
>
> Mark 
>
> -----Original Message-----
> From: Association for Recorded Sound Discussion List
> [mailto:[log in to unmask]] On Behalf Of Shai Drori
> Sent: Wednesday, 16 December 2009 8:12 AM
> To: [log in to unmask]
> Subject: Re: [ARSCLIST] Tape Shed-Sticking & stripping
>
> This reminds me of the "grandfather clock" thingamajig I saw at the
> British library. It is a large board with rollers that the tape goes
> through making a serpentine. The tape travels very slowly and can be
> heated or chilled as needed. They made this for some agfa tapes that
> stuck. I have never had a 3m 176 make trouble but this sounds like many
> 50's 60's tapes I transfered that were of American origin. One squealed
> so bad we had to soak it with silicone. I am wondering it there is a
> benefit to slow winding under a cold air blast, like an air conditioning
> duct pointing at the transport. My a/c/ has a setting for drying the
> air. Very cold air forced out and the rh drops very fast..
> Shai
>
> Richard L. Hess wrote:
>   
>> Hi, Martin,
>>
>> This is very problematic, and I do NOT think baking is a good idea.
>>
>> There is a CHANCE that month-long cold soak in a desiccated atmosphere
>>     
>
>   
>> (silica gel inside double freezer (or foil) Zip-Loc bags in the fridge
>>     
>
>   
>> (not freezer)).
>>
>> It has worked for some 3M 176 that showed this symptom. It has also 
>> not worked for other tapes. Jim Wheeler gave me this technique. I 
>> don't know his source. I haven't used it much.
>>
>> The other thing to try is VERY slow unwinding - 1.88 in/s or slower. 
>> Sometimes that alone helps.
>>
>> The tape in the photo was baked based on a consensus of the people at 
>> the seminar (including the tape owner) because we didn't have time for
>>     
>
>   
>> cold soak and we wanted to see what would work (or not).
>>
>> Since that article, I have had good results with 3M201 which had the 
>> same problem and the 1.88 in/s wind-through solved it.
>>
>> Good luck!
>>
>> Cheers,
>>
>> Richard
>>
>> At 12:34 PM 2009-12-15, Martin Fisher wrote:
>>     
>>> Got a polyester/plastic non-backcoated reel in which the binder is 
>>> stripping off onto the adjacent wind.  AKA "binder adhesion to back 
>>> of next layer" on Richard Hess' site.
>>>
>>> http://richardhess.com/notes/2006/05/26/binder-adhesion-to-back-of-ne
>>> xt-layer/
>>>
>>>
>>> Might baking be a solution for this?
>>>
>>> Martin
>>>       
>> Richard L. Hess                   email: [log in to unmask]
>> Aurora, Ontario, Canada       (905) 713 6733     1-877-TAPE-FIX
>> Detailed contact information: 
>> http://www.richardhess.com/tape/contact.htm
>> Quality tape transfers -- even from hard-to-play tapes.
>>     
>
>