2 Nov
2025
2 Nov
'25
11:43 a.m.
On Nov 2, 2025, at 10:46 AM, Jon Elson via cctalk
<cctalk(a)classiccmp.org> wrote:
On 11/1/25 20:49, ben via cctalk wrote:
Bitsavers has the 3M spec for 480 and 481 sandwich tape, I'm not sure which of these
two is what DEC used. It seems crazy, but it can't hurt to ask 3M if they still make
that stuff.
paul
How hard would it be to make new dec tape media?
60 year tape could use a replacement.
Ben.
DecTape is laminated, ie. it has Mylar on both sides of the oxide. 50 years ago,
we made working replacements from 3/4" instrumentation tape, but it was NOT
laminated. It had a print-through issue where if left sitting for a few months, it would
start getting errors. I have no idea if there is anywhere you can buy 3/4"
instrumentation tape. Maybe you can get 3/4" video tape.