Do you find this as alarming as I have that baking times have risen so
high in the last few years? My record was set last year with Ampex 480
quarter inch 2500' tapes needing 5 days to be playable. Really slowed
בתאריך 01/04/13 9:15 PM, ציטוט Marie O'Connell:
> I agree with Richard. I have seen quite a bit of this recently with Ampex
> 456. And it does make a real mess. I am also finding BASF and AGFA doing
> this too. They all appear to be slightly too wide for the tape path.
> I have been baking for much longer periods also, 3 days would be normal for
> me now.
> Good luck.
> On Tue, Apr 2, 2013 at 5:40 AM, Richard L. Hess <[log in to unmask]>wrote:
>> Hi, Curtis,
>> I've been baking longer, but edge shedding as you describe is common if
>> the tape is slit a bit wide (hard to measure, but that is why the event is
>> so random--it might be one reel out of a jumbo roll where the slitting
>> blades were mis-adjusted).
>> I don't think 24 hours (my norm these days) would show a difference as I
>> saw this off some 1/2-inch 456 just recently, but it was only the edge.
>> It is frightening, but I'd just vacuum up the little hairs and be done
>> with it. Remember, those are about a mil wide and you're dealing with
>> nominally 82-mil (minimum spec'd is 75 mil from Ampex) track width that
>> doesn't even go completely to the edge, so you probably don't have any
>> sound on the little hairs. (I did want to write "hares" in honour of the
>> season. <smile>)
>> I would check for debris in the corners of the guides (where the face
>> meets the top and bottom caps) which can exacerbate this hair-shred but,
>> overall, if it's coming just from the edges, I think you're safe.
>> I see 456 doing this more (though I've seen it more on 1/2-inch than
>> 1/4-inch). It has also happened on Agfa and BASF, but not regularly.
>> I don't have this variant specifically listed, but you might find this
>> resource of use:
>> Good luck!
>> On 2013-04-01 12:10 PM, Peoples, Curtis wrote:
>>> Hi Richard,
>>> I believe the tape is Ampex 456, not positive though. The studio
>>> generally bought Ampex 456 tape. It is a ten inch, quarter inch reel (two
>>> track master recording). For this collection, we bake 8 hours at 130
>>> degrees. We have found this to be a suitable process for this collection.
>>> The shredding appears to be from the edges. We are transferring on a
>>> relatively new Otari MX 5050. The machine was cleaned so I don't have pics
>>> of the shred. They are usually about 3 inches long before breaking and are
>>> about the thickness of fine hair.
>>> -----Original Message-----
>>> From: Association for Recorded Sound Discussion List [mailto:
>>> [log in to unmask]**GOV <[log in to unmask]>] On Behalf Of
>>> Richard L. Hess
>>> Sent: Monday, April 01, 2013 10:48 AM
>>> To: [log in to unmask]
>>> Subject: Re: [ARSCLIST] Sticky SHRED
>>> Hi, Curtis,
>>> Please provide specifics as to type of tape, width, reel type, baking
>>> process and duration.
>>> Also photographs are really useful.
>>> Is the shredding from the edges only or across the entire width of the
>>> What is the playback machine?
>>> On 2013-04-01 10:35 AM, Peoples, Curtis wrote:
>>>> Hi Folks,
>>>> We have a collection of tapes that have sticky shed and we are baking
>>>> and transferring them. Things are going as planned except for one tape. It
>>>> is shredding into fine hair like stands. I thought it needed to be baked
>>>> longer so I baked it a second time. Same problem. I have seen tape shed
>>>> before and this looks different.
>>>> Any help identifying the problem is greatly appreciated.
>>>> Curtis L. Peoples, Ph.D.
>>>> Associate Archivist, Crossroads Music Archive,
>>>> Unit Head, Crossroads Recording Studio,
>>>> Director, TTU Americana Ensemble,
>>>> Contact Info:
>>>> Southwest Collection, Texas Tech University P. O. Box 41041 Lubbock,
>>>> Texas 79409-1041
>>>> Email: [log in to unmask]
>>>> TEL: 806-742-3749 ext. 278
>>>> FAX: 806-742-0496
>> Richard L. Hess email: [log in to unmask]
>> Aurora, Ontario, Canada 647 479 2800
>> Quality tape transfers -- even from hard-to-play tapes.
מומחה לשימור והמרה של אודיו וידאו וסרטים 8-35 ממ.