As you know, Marie's article (with photos) is published on my website.
There is a comparative analysis in my paper from the ARSC Journal. Not
much has changed since then and the web page you allude to is meant as a
supplement to this paper.
For those looking for the supplementary page, it's here.
A colleague is doing limited work with PEM-46x and may publish results
later. I don't feel able to discuss it in more detail at this point.
While I love the initiative demonstrated by Marie's isopropyl drip
method (which she has indicated she's moved away from), I found better
results with decamethylcyclopentasiloxane (D5, cyclomethicone,
I just came across this 2008 report on D5 from Environment Canada and
My degrading tapes page mentions Sony PR-150, but at one point, it was a
"poster child" of squealing tape, but later it seems some batches don't
show it. I don't mention much about PR-150 as I've expanded so much on
other squealing tapes, I should expand on this, too. See if you can find
some that squeals.
On 2021-02-25 12:06 a.m., Tim Gillett wrote:
> I've revisited playing around with Marie O'Connell's wet play
> technique but have come to a dead end as I need as a test sample an
> actual squealing tape which does not respond to normal baking. Marie
> mentioned PEM 469 of which I have many reels but the samples I've
> tried seem to play fine. I also have much 3M 177 but reports on that
> seem mixed. Perhaps that's related to the moderate Mediterranean
> climate here in Perth, Australia. Richard Hess mentions 3M 175 and
> some others but what would be the most common known bad cases? I may
> have some here in my collection but it would shorten the process if I
> could narrow my search down to certain tape types known to squeal
> regardless of baking.
> Thanks for any advice,
> Perth, Western Australia
> Email sent using Optus Webmail
Richard L. Hess email: [log in to unmask]
Aurora, Ontario, Canada 647 479 2800
Track Format - Speed - Equalization - Azimuth - Noise Reduction
Quality tape transfers -- even from hard-to-play tapes.