Hi Corey Thank you for your advice. My inclination was to try baking even though the tapes are not back-coated. First test seems very promising. Two reels tested and played fine. The emulsion is different from the green and red reels so I see no pint in treating the good reels. I don’t know who manufactured the tape for Nagra but it looks to be high quality tape. On Mon, 2 Nov 2020 at 21:36 Corey Bailey <[log in to unmask]> wrote: > Hi Shai, > > I would consider baking the blue reel tapes. Although I save baking as a > last resort, layer-to-layer adhesion usually requires careful baking. > You may want to lubricate the red & green reels if you have any kind of > oxide issues at all, including having to clean the transport more than > usual. > > Although you are a professional & plenty qualified, you may find some > useful information in two articles that I wrote: > > > http://www.baileyzone.net/BAKING%20ANALOG%20AND%20DIGITAL%20AUDIO%20TAPE.htm > > http://www.baileyzone.net/LUBRICATING%20POLYESTER%20AUDIO%20TAPE.htm > > Be safe, > > ~CB > > Corey Bailey Audio Engineering > www.baileyzone.net > > On 11/2/2020 4:17 AM, Shai Drori wrote: > > Hoping to find some answers from the group about a problem I am facing. > I'm > > digitizing a few hundred Nagra SN tapes. These are reel to reel tapes in > > the width of a cassette. There are three lengths, red, green, and blue > > reels, with blue being the thinnest and longest tape > > > > the red and green tapes play fine but the blue tapes are stuck so each > > layer is glued to the layer before it. When I try to play the tapes they > > squeal and the magnetic particles sometimes are removed from the base and > > stay stuck to the back of the layer before. These tapes are not > > black-coated and resemble really thin c-120 cassette material. > > > > Any suggestions are welcome. > > > > Cheers > > Shai Drori > > Expert digitization services for Audio Video > > 3K scanning for film 8mm-35mm > > Timeless Recordings Music Label > > www.audiovideofilm.com > > [log in to unmask] > -- Cheers Shai Drori Expert digitization services for Audio Video 3K scanning for film 8mm-35mm Timeless Recordings Music Label www.audiovideofilm.com [log in to unmask]