Plexiglass protective paper

In article ,
jerry wass wrote:

Anybody had any experience Peeling Protective Paper from
Plexiglass??---When it's old & dried out---everything I've used to try
to soften the old glue also softens the plexi & leaves it with an
orange-peel finish. I have several 12" sq pieces, the center will
finally come once you get out there, but the edges are no-luck.

Thanks in advance

Jerry

I'll have to agree with those who advise tossing it and buying new.
Acrylic is cheaper than dirt compared to the time and frustration that
you're facing by trying to peel the paper. You don't say how thick it
is, but McMaster sells a square foot of the 1/4" (0.236, actually) for
$5.00.

Thermoplastics are attacked by all sorts of things; definitely including
"rubbing" alcohol, which, as someone else said, is isopropyl. I once
destroyed $10,000 worth of surgical accessory instruments with a few
drops of cyanoacrylate (super glue) that I cleverly used as an
anti-rotation solution on a luer lock fitting mounted to a plastic (ABS,
in that case) panel. Of course, it took a week for the things to
disintegrate, so they were already in the customer's hands. The damage
was temporarily disguised by the self-adhesive foil labels that held the
fragments in place as they fell apart.

Your lucky these are small pieces, the only method I have used that was
successful was soaking in cold water for several days to a week or more.
This will break down cellulose which can then be rolled off with the
palm of your hand (kind of like rolling a buger between your fingers).
Yes the adhesive will come off at the same time.

"jerry wass" wrote in message
...
Anybody had any experience Peeling Protective Paper from
Plexiglass??---When it's old & dried out---everything I've used to try
to soften the old glue also softens the plexi & leaves it with an
orange-peel finish. I have several 12" sq pieces, the center will
finally come once you get out there, but the edges are no-luck.

Thanks in advance

Jerry

of the 1/4" (0.236, actually) for

Well, 6mm actually

In article . com,
wrote:

of the 1/4" (0.236, actually) for

Well, 6mm actually

Hey, if it's 12" x 12", it can't be 6 mm thick smiley emoticon if you
didn't infer it already. Americans despise the metric system, because
it's based on logic, and it's too easy to work with.

I bought a pallet load of acrylic a few years ago, 4' x 8' sheets, in
nominal 1/4" and 1/2" thicknesses. I spent a week cutting it up into
pieces that were supposed to fit together, first blanking on the table
saw with the fancy plastic cutting blade, and then routing to finished
size with radiused edges. Then I found out that roughly half of the 1/4"
stuff was really 0.250, and the rest was 0.236.

Thanks to one & all for the most informative inputs----My pieces
apparently weren't too bad, after sponging the paper with 70% Isopropyl
Alcohol-(rubbing),[ 'cause I had it in the house] IT ALLOWED THE paper
and glue to roll, peel, off together. (like a BIG Booger, Bubba) I'll
see how the plastic survives & report any unfavorable transformations in
the quality of the Perspex.

Jerry



Jim wrote:
Your lucky these are small pieces, the only method I have used that was
successful was soaking in cold water for several days to a week or more.
This will break down cellulose which can then be rolled off with the
palm of your hand (kind of like rolling a buger between your fingers).
Yes the adhesive will come off at the same time.

"jerry wass" wrote in message
...

Anybody had any experience Peeling Protective Paper from

Plexiglass??---When it's old & dried out---everything I've used to try

to soften the old glue also softens the plexi & leaves it with an
orange-peel finish. I have several 12" sq pieces, the center will
finally come once you get out there, but the edges are no-luck.

Thanks in advance

Jerry

Jerry wrote:
Most rubbing alcohol is isopropyl alcohol but it can also be denatured
alcohol (ethanol with some bitter substance added to decrease the chances of
it being drunk). I am not aware of any rubbing alcohol having methanol.
Methanol is very toxic - causes blindness and death. Methanol is commonly
used as an antifreeze in windshield washer fluid (note the poison labels).


Unfortunately the additives used to denature ethanol are
not merely bitter, they are toxic, typically methanol,
or ketones. At one time sulphuric acid was used.

Ethanol denatured with methanol is sometimes still used as
rubbing alcohol. I have some at home. (google for 'surgical spirits')

But you are right, typical rubbing alcohol is 70% isopropynol
with the balance being water.

--

FF

Goo Gone. Takes time but will work without damage.

Use Mineral spirits. Make up a little tray out of an old picture frame
fill with mineral spirits. Place plexi in there and cover with another
piece of polyethethelene to reduce evaporation. Should soften enough to
peel the paper off.
If that doesn't work blast it with a pressure washer

Why haven't any of you guys read the DIRECTIONS on
how to remove the old stuff. Pop it in the oven, warm it to about 160F
and it comes off slick as snot. Forget solvents, water or any of that
other crap, just check the manufacturers recommendations.

Oh Yeah, I mold Acrylic for a living.

Scott.
www.spektrproducts.com

In my case, it's the windshield on my Adventurer kit. You got an oven that
big?



"pbc76049" wrote in message
...
Why haven't any of you guys read the DIRECTIONS on
how to remove the old stuff. Pop it in the oven, warm it to about 160F
and it comes off slick as snot. Forget solvents, water or any of that
other crap, just check the manufacturers recommendations.

Oh Yeah, I mold Acrylic for a living.

Scott.
www.spektrproducts.com