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Old February 1st 06, 01:17 AM posted to rec.photo.darkroom
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Default 4X5 film holders

"Richard Knoppow" wrote

The problem with "friction" tape, and many other tapes,
is that the adhesive migrates and leaves a gummy border
around the tape. Friction tape is NOT the familiar smooth
plastic electrical tape. I have not seen actual friction
tape for some time.


Still around and still used. Friction tape is used over
self-vulcanizing rubber tape. The combination makes for
an excellent seal against weather for outdoor electrical
splices.

I think friction tape would be a bad choice for film holders because
the adhesive just isn't that strong. After being wrapped
around an electrical splice the tape is slit lengthwise
for a few inches and then tied in a square knot around the
splice so it doesn't unravel.

Filament tape, the stuff used for wrapping packages,
should work well as a temporary fix. Another choice
might be 'Mastic' cloth tape.

Whatever is used it should have a fiber/fabric
reinforcement.

A roll of the real tape is only a few dollars from
Calumet. Might as well spend the money with a photography
supplier than a hardware store.

In any case a good hardware store should be able to
supply any of these, except for 'genuine' gaffers'
and hinge tapes.

--
Nicholas O. Lindan, Cleveland, Ohio
Consulting Engineer: Electronics; Informatics; Photonics.
To reply, remove spaces: n o lindan at ix . netcom . com
Fstop timer - http://www.nolindan.com/da/fstop/index.htm