Is there a good chemical for helping to remove a few layers of Minwax
Helmsman Spar Urethane clear Satin finish that may be one to several years
old. For my 20 year old summer pine picnic table. Every other year or so I
scape and sand, sometimes to bare wood on a great portion, but its always a
hassle, iirc the book Understand by Flexner talks about a chemical for
removal of finish like this this and I think the main chemical component is
MEK (methyl ethyl ketone), but I forget the details. I believe it was said
to be unobtainable, but I do think I have seen some form of this chemical
component in a variety of things, like pvc or abs glue for a guess, and I
have always thought of finding out if there is some way to get me a good
stripper for this job one day. Ok, I checked, the "Oatey ABS Cement" says
"Contains Methyl ethyl ketone", and the "Oatey PVC Cement" says "Contains
Methyl ethyl ketone, Tetrahydrofuran, PVC Resin, Cyclohexanone. I have
never tried either of these, and don't know what would happen. I have tried
but anything chemical I have ever tried has always fallen short of being
advantageous, sort of dissolves but can't cut it. So for the dozenth time I
have a cabinet scaper (still can't sharpn it yet), paint scraper, putty
knife, sand paper (by hand and 1/3 sheet vibration m/c). I have learned over
the years that the liquid chlorine (~$10/ 50L from the pool store) does a
good job of bleaching white any of the bare wood that has darkened, possibly ...

On Jun 17, 12:55 am, "bent" rogers.com> wrote:

"bent" wrote:

On Jun 17, 12:55 am, "bent" rogers.com> wrote:

bent wrote:

"Lew Hodgett" verizon.net> writes:

NaOH.

scott

"Scott Lurndal" wrote:

Chalk it up to the spell checker, it nwas late and it got me

Lew

On Jun 17, 2:57 am, "Lew Hodgett" verizon.net> wrote:

I have a commercially available stripper that is favored by the
aircraft industry to strip mutiple coats of Imron and other high
performance coatings.

It is a deadly concoction of Sodium Hydroxide, MEK, Acetone, some kind
of Benzine, Alcohol, and other goodies. It is the nastiest stuff I
have used to date, available to commercial accounts only. It will
actually eat into lower quality latex gloves.

I was using it to strip a door that had a couple of coats of spar,
then a couple of coats of poly on top of that. It ate through in one
coat of stripper in a lot of places!

I brushed against the door when I was coating it and got that stuff on
myself. I felt it burn a bit, but thought "as soon as I coat this
side and cover, I'll rinse it off". Fifteen minutes later I had a
burn on my arm that was surprisingly bad, and I couldn't get it to
stop burning. A couple of days later the skin fell off, and I still
have a scar today to remind me to be more careful.

"Benzene" is enough to get the stuff restricted.

Way back when, Rochester Products offered a carb cleaner to clean up a
gummed up carb.

Remove the air cleaner and pour it right down the carb while running
at a fast idle.

Did a great job cleaning carbs, but oh the effects on the environment.

Lew

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