 |
 |
Dear Mark, I used a great deal of 3M 206 and 207 from its introduction. It always behaved well and never displayed binder hydrolysis symptoms. However, I graduated to digital in 1982, so how later iterations of 206/7 behaved is beyond me, except to say that I never heard of it developing binder hydrolysis. 3M's manufacturing was centered in Minnesota and New Jersey, and the former plant produced a more consistent product than the latter. We did encounter mis-slitting and defective oxide at times, and subsequently learned that those problems were frequently encountered in the NJ plant. Good luck with the a/d. DDR On Mon, Oct 23, 2017 at 11:22 AM, Hood, Mark <[log in to unmask]> wrote: > I am about to digitize a daily large batch of quarter-inch tapes, most of > which I believe to be 3M 206. There were professionally recorded and have > been stored in a variety of conditions since the mid-70s, but in a pretty > stable environment for the last 20 years. > > I'd like to solicit everyone's current experience and protocols when > dealing with Scotch 206 - specifically, are you baking prior to spooling, > or is 206 currently behaving well enough that a blanket baking policy is > not required? > > And if you are baking 206 at any point in the process, what baking times > and temperatures are you all using for quarter-inch stock? > > Many thanks, > > Mark > > Mark Hood > Associate Professor of Music > Department of Audio Engineering and Sound Production > IU Jacobs School of Music > -- 1006 Langer Way Delray Beach, FL 33483 561.265.2976