Food safe finish for goblet interiors?
Mark Haveman
goblets and tankards?
Bill Noble
is lying around - got this from Raffan's book
Mark Haveman <hav...@mcn.org> wrote in message
news:380BB13E...@mcn.org...
Grusserry
our modern finishing technology was invented. Just avoid woods that cause
problems, walnut, cocobolo, etc., but that is true whether or not you put
anything on the wood.
Rex Haslip
It comes in an aerosol spray can and is very convienient and easy to apply
Rex Haslip
Auckland
New Zealand
Mark Haveman <hav...@mcn.org> wrote in article
<380BB13E...@mcn.org>...
Kyle Goodnight
Grusserry <grus...@aol.com> wrote in message
news:19991018201555...@ng-ba1.aol.com...
Grusserry
whose address I don't have readilly available, so I will leave the chemistry to
someone who has more knowledge than I do. But, Walnut trees don't like anything
growing under their crown or competition from other trees, so they develop a
toxin that kills other vegitation and boring insects. Because of this chemical
in the wood, many people are very allergic to Walnut. I know of 2 active
woodturners who have to avoid any exposure to Walnut. It is probably also
somewhat of an accumulative problem because after about 40 years of using
Walnut, I can still turn it wet, but in the past few years I have started to
develop a rash on the inside of my wrists and elbows when I sand it. I can't
use it for furniture at all. Many people also have a problem with Walnut Oil.
Walnut shavings should not be used for animal bedding because the reaction with
their urine will create a gas that could kill the animal. This is a pqarticular
problem with horses and other animals with a high ammonia content in their
urine.
Cocobolo is one of those woods that everyone will eventually develop an allergy
to. If you don't have it, just wait, because you will. It is only a matter of
time.
George Nazarko
competing vegetation or insects. Tamarack and pine needles make the soil so
sour underneath that nothing'll grow unless you do some burning to sweeten
with wood ash.
It's a Darwinian world out there.
Kyle Goodnight wrote in message <7ui6di$235$1...@autumn.news.rcn.net>...
scott swager
Charles VanLeeuwen
my mouth. Must be something in the chemistry of the plant.
cvl
Kyle Goodnight wrote in message <7ui6di$235$1...@autumn.news.rcn.net>...
>What is it about walnut that is so toxic?
>
max...@my-deja.com
"Charles VanLeeuwen" <cav...@nmia.com> wrote:
> I don't know about the wood but eating walnuts immediately leaves
sores in
> my mouth. Must be something in the chemistry of the plant.
>
I don't suppose you might be...allergic? It may not be the tree as much
as your system.
--
Maxxed
Sent via Deja.com http://www.deja.com/
Before you buy.
max...@my-deja.com
"George Nazarko" <@mail.tds.net> wrote:
> Juglone, a "natural" herbicide. A lot of trees have defenses against
> competing vegetation or insects.
In a search about Walnut, Juglone, and toxicity, the only reference to
toxic effect from juglone is to some plants and micro-organisms. In
reference to humans, the only toxicity reference that was found was
'pollen may cause hay fever'. So while this substance is present in
Walnut (in varying amounts), there doesn't seem to be any documentation
to back up it's adverse affect on humans. Of course, I could have
missed a few sources, as it was hardly an exhaustive search (only about
62 documents mostly from University sources).
The only advice would be to use the usual precautions in avoiding
excessive amounts of dust from this (or any other)source.
As for finish? Find something to seal it completely, and it should
negate any 'ill effects' from the wood and juglone. One would think, at
any rate.
max
> Kyle Goodnight wrote in message <7ui6di$235$1...@autumn.news.rcn.net>...
> >What is it about walnut that is so toxic?
> >
>
>
--
Richard Preston
Like peanuts, some people are just alergic to walnuts. That's why it's
dangerous to use a walnut oil without disclosure.
I used to do a lot of wok cooking and I used peanut oil. Had to check with
everyone before I served them.
WoodTurners Anonymous of Richmond, Va, an AAW Chapter
Grusserry
plastic. Why not take advantage of the natural properties of the wood? If we
want ceramic or glass, then buy that, not wood. There is nothing that we can
put on wood that will truely "waterproof"it, except encapsulate it in something
like an epoxy or other plastic. But, then it would no longer be a wood vessel.
Has anyone drank wine or beer from an epoxy vessel? You'll only do it once. But
from a natural Ash goblet - that is the ultimate, especially when serving a
home-brew steam style brew. Don't knock it if you have never tried it!!!
George Nazarko
like Juglone interferes with life processes, it could be equally as harmful
to humans. After all, if you believe what the cellular biologists tell us,
protein synthesis, cellular respiration and reproduction are pretty much the
same throughout the kingdoms, and there's a bunch of processes and
structures that cross over kingdoms as well. Lack of research does not mean
lack of effect, and the evidence is heavily in favor of the theory that life
is life wherever it's found - at least at the cellular level.
max...@my-deja.com wrote in message <7ulgr2$t1a$1...@nnrp1.deja.com>...
max...@my-deja.com
"George Nazarko" <@mail.tds.net> wrote:
> Thereby hangs a thread. Depending on the mechanism by which a
substance
> like Juglone interferes with life processes, it could be equally as
harmful
> to humans. After all, if you believe what the cellular biologists
tell us,
> protein synthesis, cellular respiration and reproduction are pretty
much the
> same throughout the kingdoms, and there's a bunch of processes and
> structures that cross over kingdoms as well. Lack of research does
not mean
> lack of effect, and the evidence is heavily in favor of the theory
that life
> is life wherever it's found - at least at the cellular level.
>
the local environment, than actual poison. From what I had read, this
substance creates an inhospitable area under it's boughs out to the
drip line. Water, running off the leaves, leaches some of this Juglone
out, and deposits it in the soil. Much like an evergreen making the
soil around it acidic, and thereby inhospitable to other plants.
These documents also showed that the substance was present in the nuts
in nearly the same quantities (dependant on the time of year) as the
leaves and boughs. If walnut wood is toxic, wouldn't the nuts also be?
In reference to the effect on microorganisms, we are talking about a
one-celled creature pretty much taking a bath in juglone, as opposed to
a turner breathing or handling the wood. Quite a few more cells
involved, with a huge difference in exposure.
All in all, you make some good points. The fact that it hasn't been
researched does *not* mean the issue isn't valid. While I wouldn't want
to swim in juglone, the small amounts I encounter will not dissuade me
from using it. After all, even water will kill you if you have enough
of it.
Michael Dresdner
are food safe once they are cured.
I would choose either a good oil based polyurethane or simply use a drying
oil. Drying oils, which form a film by reacting with oxygen, are oils
derived from nuts -- such as linseed oil, tung oil, walnut oil, etc. Mineral
and vegetable oils do not dry, and vegetable oils go rancid. Incidentally,
peanut oil is not a drying oil, and for good reason -- peanuts are not nuts,
they are legumes.
For the record, my favorite high gloss knife handle is one I made of pau
ferro and finished with linseed oil crosslinked with cyanoacrylate. The
coating is hard, glossy, dishwasher safe, and cures in about 3 seconds per
coat. Cyanoacrylate adhesive will cause linseed oil to crosslink immediately
into a hard finish. Handy tip for turners, I think...
Michael Dresdner
Finishing Consultant
3303 28th St. SE
Puyallup, WA, 98374
http://www.michaeldresdner.com
Jon Schilling
Kindly explain "cross linking" to us.
--
Jon Schilling
Ridgefield, Wa USA (10 miles north of Portland, Ore)
Michael Dresdner <dres...@ix.netcom.com> wrote in message
news:7un5es$rr$1...@nntp5.atl.mindspring.net...
Fred Holder
That is an interesting tip on linseed oil and CA glue. Would you be interested
in elaborating a bit on it. I've used linseed oil on a lot of my work, but could
never get a hard glossy finish from it. How are you applying the CA glue? Do you
apply the linseed oil so that it can soak into the wood and then immediately
apply the CA glue in a flooding sort of way to activate what you call
crosslinking. Of course flooding CA glue can be a pretty expensive finish. I've
use just the CA glue on small item to provide a very hard and durable finish,
but have always considered too expensive and too hard to control for larger
pieces.
In fact, I would be interested in an article on this subject for publication in
More Woodturning. If it isn't too difficult to execute, I would suspect it would
be a boon for some woodturners.
Fred Holder
<http://www.fholder.com/>
In article <7un5es$rr$1...@nntp5.atl.mindspring.net>, "Michael says...
>
>Just go for convenience and durability, since virtually all common finishes
>are food safe once they are cured.
>
>I would choose either a good oil based polyurethane or simply use a drying
>oil. Drying oils, which form a film by reacting with oxygen, are oils
>derived from nuts -- such as linseed oil, tung oil, walnut oil, etc. Mineral
>and vegetable oils do not dry, and vegetable oils go rancid. Incidentally,
>peanut oil is not a drying oil, and for good reason -- peanuts are not nuts,
>they are legumes.
>
>For the record, my favorite high gloss knife handle is one I made of pau
>ferro and finished with linseed oil crosslinked with cyanoacrylate. The
>coating is hard, glossy, dishwasher safe, and cures in about 3 seconds per
>coat. Cyanoacrylate adhesive will cause linseed oil to crosslink immediately
>into a hard finish. Handy tip for turners, I think...
>
>Michael Dresdner
>Finishing Consultant
>3303 28th St. SE
>Puyallup, WA, 98374
>http://www.michaeldresdner.com
>
>
>
Fred Holder
<http://www.fholder.com/>
Dee Smith
How do you apply this mix which hardens so quickly?
Dee
Michael Dresdner wrote:
>
> Just go for convenience and durability, since virtually all common finishes
> are food safe once they are cured.
>
> I would choose either a good oil based polyurethane or simply use a drying
> oil. Drying oils, which form a film by reacting with oxygen, are oils
> derived from nuts -- such as linseed oil, tung oil, walnut oil, etc. Mineral
> and vegetable oils do not dry, and vegetable oils go rancid. Incidentally,
> peanut oil is not a drying oil, and for good reason -- peanuts are not nuts,
> they are legumes.
>
> For the record, my favorite high gloss knife handle is one I made of pau
> ferro and finished with linseed oil crosslinked with cyanoacrylate. The
> coating is hard, glossy, dishwasher safe, and cures in about 3 seconds per
> coat. Cyanoacrylate adhesive will cause linseed oil to crosslink immediately
> into a hard finish. Handy tip for turners, I think...
>
> Michael Dresdner
> Finishing Consultant
> 3303 28th St. SE
> Puyallup, WA, 98374
> http://www.michaeldresdner.com
--
Dee Smith
PIT, Packaging and Integration Testing
IBM Austin, Tx
Frank Harman
Michael Dresdner <dres...@ix.netcom.com> wrote in message
news:7un5es$rr$1...@nntp5.atl.mindspring.net...
finishes
> are food safe once they are cured.
> derived from nuts -- such as linseed oil, tung oil, walnut oil, etc.
Hi Michael...I was always under the impression that real TUNG oil is a
product of the ROOTS of a tree which grows in China (the true name of that
tree escapes me at the moment), as opposed to being derived from a nut.
Perhaps you can enlighten me about this...and others as well.
Grusserry
primarily from the "Aleurites Fordii", a deciduous tree that is native to
China. These trees were imported and grown on large plantations in North
Florida during the early 1900's and were replaced by the pine plantations in
the 1950's when the advent of latex paints reduced the market for the oil based
paints in the US. Many of these trees still grow along highway US-19 east from
Tallahassee. It is a beautiful wood for turning, but beware because the wood is
listed as a posionous substance. I have personal experience of its intoxicating
effects with all the symptoms - slurred speech, loss of balance, etc.