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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]