This is in response to the person who was having trouble getting his brown
wood to turn purple. From the rec.sport.billiard ng:
Purpleheart is brown when first cut, and will turn purple after
exposure to
uv light, as long as it has not been finished with a uv blocker. The
final color varies with the amount of reactive pigments in the wood.
Whenever I make a purpleheart cue, I hang it under fluorescent lamps
for a few days to bring out the color prior to finishing, and it works
v. good.
P. Fanelli
dwhite
In article <[email protected]>, Jack
<[email protected]> wrote:
> Which kind is my plane made of?
> The oddball jack/jointer plane I received from you last week?
Hey, I've got one of those too!
It's still bright purple after several years.
J. Clarke <[email protected]> schreef
> According to the Forest Products Labs database there are at least 10
identified species called "purpleheart", in addition the entire genus
"Peltogyne" is known by that name. In addition to the Peltogynes though,
any wood of genus Hymenaea (some of which are listed as alternate names for
some of the Peltogynes--I'm not clear on whether there's confusion over
which genus those particular species belong in or whether Hymenaea has been
found to be the same as Peltogyne and the scientific community hasn't
gotten the resulting mess cleaned up yet) is called "purpleheart" as are a
couple of species of Copaifera.
+ + +
All the purple-turning purpleheart is from the genus Peltogyne, which counts
some twenty species. There is some variation in the other properties, some
woods are rather fine, some pretty coarse.
Hymenaea is a related genus, of which the wood never turns purple. There is
no confusion on the difference between the two genera in the scientific
community (at least not in the part that deals with such matters). Would not
want to vouch for the Social Sciences.
PvR
> P van Rijckevorsel wrote:
> > All the purple-turning purpleheart is from the genus Peltogyne, which
counts some twenty species. There is some variation in the other properties,
some woods are rather fine, some pretty coarse.
> > Hymenaea is a related genus, of which the wood never turns purple. There
is no confusion on the difference between the two genera in the scientific
community (at least not in the part that deals with such matters). Would
not want to vouch for the Social Sciences.
> J. Clarke <[email protected]> schreef
> Then you might want to explain to FPL that Hymeaea confertiflora Hayne is
> _not_ a synonym for Peltogyne confertiflora (Hayne) Benth.
+ + +
I don't need to explain this to the FPL, as they know what they are doing.
The existence of such a synonym does not mean more than that once upon a
time there was somebody who felt that the species belongs in another genus
and went into print saying so. This feeling can be based on all sorts of
reasons, even a plain mistake.
For example mahogany was originally described as a species in Cedrela, as
"mahogany is a kind of cedar" (one of many). This means that among the
synonyms of Swietenia mahagoni (L.) Jacq. is Cedrela mahagoni L.
This does not mean that there is any confusion between Cedrela and
Swietenia. Any such confusion is more than two centuries in the past. (At
least there is no confusion among scientists, last week I met somebody who
had a cedar board and felt it was mahogany.)
A more extreme case is Andira and Vouacapoua which share synonyms even
though they are not related (different (sub)families). It is not really an
exception to have up to fifty synonyms for any one correct name, and some of
these can be really wild. All it takes is somebody who in the past 250 years
has been willing to go into print with a viewpoint.
PvR
Sandy wrote:
> On Fri, 21 May 2004 04:50:19 GMT, "Dan White"
> <[email protected]> posted:
>
>>This is in response to the person who was having trouble getting his brown
>>wood to turn purple. From the rec.sport.billiard ng:
>>
>>Purpleheart is brown when first cut, and will turn purple after
>>exposure to
>>uv light, as long as it has not been finished with a uv blocker. The
>>final color varies with the amount of reactive pigments in the wood.
>>Whenever I make a purpleheart cue, I hang it under fluorescent lamps
>>for a few days to bring out the color prior to finishing, and it works
>>v. good.
>>P. Fanelli
>>
>
> Good info.
>
> Now if we could have the species of tree whose wood does that, we will
> have some useful knowledge. That's if what I read is true that there
> are several woods called purple heart.
According to the Forest Products Labs database there are at least 10
identified species called "purpleheart", in addition the entire genus
"Peltogyne" is known by that name. In addition to the Peltogynes though,
any wood of genus Hymenaea (some of which are listed as alternate names for
some of the Peltogynes--I'm not clear on whether there's confusion over
which genus those particular species belong in or whether Hymenaea has been
found to be the same as Peltogyne and the scientific community hasn't
gotten the resulting mess cleaned up yet) is called "purpleheart" as are a
couple of species of Copaifera.
They have details only on peltogyne as a genus, which they say is brown when
cut, turns purple on exposure, and then back to dark brown, without any
mention of UV or the effects of chemicals or finishes. They also say that
Janka hardness ranges from 1860 to 3920 pounds, which is quite a range,
suggesting (to me anyway) that there is considerable variation in that
property between species, which further suggests that there may be
variation in other properties.
All varieties seem to come from the same general region, so you can't single
any of them out by origin.
If anybody knows an agriculture or biology grad student in need of a topic
for a Masters' thesis, "what makes purpleheart turn purple and is it the
same for all varieties" would be a good topic IMO.
> Purple is my favourite colour, and I suspect my three-year-old
> granddaugter's too, from all the purple clothes she wears, but she
> keeps asserting to everyone who'll listen -- "I don't like pwerple!"
>
> Just wait till I make something out of "Pwerple" poplar :)
--
--John
Reply to jclarke at ae tee tee global dot net
(was jclarke at eye bee em dot net)
"Steve Knight" <[email protected]> wrote in message
news:[email protected]...
> O
>
> >Purpleheart is brown when first cut, and will turn purple after
> >exposure to
> >uv light, as long as it has not been finished with a uv blocker.
>
> this is not a given it depends on the wood. some purpleheart only turns a
> lighter purple and never turns brown. there are several woods called
> purpleheart.
>
Which kind is my plane made of?
The oddball jack/jointer plane I received from you last week?
-Jack
P van Rijckevorsel wrote:
> J. Clarke <[email protected]> schreef
>> According to the Forest Products Labs database there are at least 10
> identified species called "purpleheart", in addition the entire genus
> "Peltogyne" is known by that name. In addition to the Peltogynes though,
> any wood of genus Hymenaea (some of which are listed as alternate names
> for some of the Peltogynes--I'm not clear on whether there's confusion
> over which genus those particular species belong in or whether Hymenaea
> has been found to be the same as Peltogyne and the scientific community
> hasn't gotten the resulting mess cleaned up yet) is called "purpleheart"
> as are a couple of species of Copaifera.
>
> + + +
> All the purple-turning purpleheart is from the genus Peltogyne, which
> counts some twenty species. There is some variation in the other
> properties, some woods are rather fine, some pretty coarse.
>
> Hymenaea is a related genus, of which the wood never turns purple. There
> is no confusion on the difference between the two genera in the scientific
> community (at least not in the part that deals with such matters). Would
> not want to vouch for the Social Sciences.
Then you might want to explain to FPL that Hymeaea confertiflora Hayne is
_not_ a synonym for Peltogyne confertiflora (Hayne) Benth.
> PvR
--
--John
Reply to jclarke at ae tee tee global dot net
(was jclarke at eye bee em dot net)
In article <[email protected]>,
[email protected] wrote:
And some of it is a brilliant purple when first cut and gradually
generates a brownish color.
Dick
>
> >Purpleheart is brown when first cut, and will turn purple after
> >exposure to
> >uv light, as long as it has not been finished with a uv blocker.
>
> this is not a given it depends on the wood. some purpleheart only turns a
> lighter purple and never turns brown. there are several woods called
> purpleheart.
On Fri, 21 May 2004 16:19:28 -0600, Dave Balderstone
<dave@N_O_T_T_H_I_S.balderstone.ca> brought forth from the murky
depths:
>In article <[email protected]>, Jack
><[email protected]> wrote:
>
>> Which kind is my plane made of?
>> The oddball jack/jointer plane I received from you last week?
>
>Hey, I've got one of those too!
>
>It's still bright purple after several years.
My Guntieshave is still awfully purkle, too.
==========================================================
Save the ||| http://diversify.com
Endangered SKEETS! ||| Web Application Programming
==========================================================
On Fri, 21 May 2004 06:52:26 -0400, "J. Clarke"
<[email protected]> posted:
>Sandy wrote:
>
>> On Fri, 21 May 2004 04:50:19 GMT, "Dan White"
>> <[email protected]> posted:
>>
>>>This is in response to the person who was having trouble getting his brown
>>>wood to turn purple. From the rec.sport.billiard ng:
>>>
>>>Purpleheart is brown when first cut, and will turn purple after
>>>exposure to
>>>uv light, as long as it has not been finished with a uv blocker. The
>>>final color varies with the amount of reactive pigments in the wood.
>>>Whenever I make a purpleheart cue, I hang it under fluorescent lamps
>>>for a few days to bring out the color prior to finishing, and it works
>>>v. good.
>>>P. Fanelli
>>>
>>
>> Good info.
>>
>> Now if we could have the species of tree whose wood does that, we will
>> have some useful knowledge. That's if what I read is true that there
>> are several woods called purple heart.
>
>According to the Forest Products Labs database there are at least 10
>identified species called "purpleheart", in addition the entire genus
>"Peltogyne" is known by that name. In addition to the Peltogynes though,
>any wood of genus Hymenaea (some of which are listed as alternate names for
>some of the Peltogynes--I'm not clear on whether there's confusion over
>which genus those particular species belong in or whether Hymenaea has been
>found to be the same as Peltogyne and the scientific community hasn't
>gotten the resulting mess cleaned up yet) is called "purpleheart" as are a
>couple of species of Copaifera.
>
>They have details only on peltogyne as a genus, which they say is brown when
>cut, turns purple on exposure, and then back to dark brown, without any
>mention of UV or the effects of chemicals or finishes. They also say that
>Janka hardness ranges from 1860 to 3920 pounds, which is quite a range,
>suggesting (to me anyway) that there is considerable variation in that
>property between species, which further suggests that there may be
>variation in other properties.
>
>All varieties seem to come from the same general region, so you can't single
>any of them out by origin.
>
>If anybody knows an agriculture or biology grad student in need of a topic
>for a Masters' thesis, "what makes purpleheart turn purple and is it the
>same for all varieties" would be a good topic IMO.
Sounds like a valuable study to me, and I've never even seen
"purpleheart".
sandy responds:
>>If anybody knows an agriculture or biology grad student in need of a topic
>>for a Masters' thesis, "what makes purpleheart turn purple and is it the
>>same for all varieties" would be a good topic IMO.
>
>Sounds like a valuable study to me, and I've never even seen
>"purpleheart".
In addition to being correct, you've got a treat coming when you do see
purpleheart for the first time.
Charlie Self
"Bore, n.: A person who talks when you wish him to listen." Ambrose Bierce, The
Devil's Dictionary
>Which kind is my plane made of?
>The oddball jack/jointer plane I received from you last week?
the purpleheart that turns a lighter purple. it tends to be denser then the
stuff that turns brown when cut. but it also tends not to have much figure.
--
Knight-Toolworks & Custom Planes
Custom made wooden planes at reasonable prices
See http://www.knight-toolworks.com For prices and ordering instructions.
O
>Purpleheart is brown when first cut, and will turn purple after
>exposure to
>uv light, as long as it has not been finished with a uv blocker.
this is not a given it depends on the wood. some purpleheart only turns a
lighter purple and never turns brown. there are several woods called
purpleheart.
--
Knight-Toolworks & Custom Planes
Custom made wooden planes at reasonable prices
See http://www.knight-toolworks.com For prices and ordering instructions.
On Fri, 21 May 2004 04:50:19 GMT, "Dan White"
<[email protected]> posted:
>This is in response to the person who was having trouble getting his brown
>wood to turn purple. From the rec.sport.billiard ng:
>
>Purpleheart is brown when first cut, and will turn purple after
>exposure to
>uv light, as long as it has not been finished with a uv blocker. The
>final color varies with the amount of reactive pigments in the wood.
>Whenever I make a purpleheart cue, I hang it under fluorescent lamps
>for a few days to bring out the color prior to finishing, and it works
>v. good.
>P. Fanelli
>
Good info.
Now if we could have the species of tree whose wood does that, we will
have some useful knowledge. That's if what I read is true that there
are several woods called purple heart.
Purple is my favourite colour, and I suspect my three-year-old
granddaugter's too, from all the purple clothes she wears, but she
keeps asserting to everyone who'll listen -- "I don't like pwerple!"
Just wait till I make something out of "Pwerple" poplar :)