DIYbanter

DIYbanter (https://www.diybanter.com/)
-   Woodturning (https://www.diybanter.com/woodturning/)
-   -   Wood Bleach (https://www.diybanter.com/woodturning/233771-wood-bleach.html)

Ted February 15th 08 01:11 AM

Wood Bleach
 
I turned some wet apple into natural edge bowls. They turned out
great. BUT...

After a few days they started to get some black mold spots. I used
some wood bleach on them and it got rid of the mold spots and whitened
up the sap wood. They looked great. BUT...

Now they have been setting for about a week or so. I went out today
to finish sand them and they all have turned pink. Mostly the sap
wood. Now they don't look so great.

This is the first time I ever used wood bleach. Is there something I
could have done wrong? Is there a way to get rid of the pink color?
Help!!

Ted

[email protected] February 15th 08 06:23 AM

Wood Bleach
 
On Feb 14, 8:11*pm, Ted wrote:
I turned some wet apple into natural edge bowls. *They turned out
great. *BUT...

After a few days they started to get some black mold spots. *I used
some wood bleach on them and it got rid of the mold spots and whitened
up the sap wood. *They looked great. *BUT...

Now they have been setting for about a week or so. *I went out today
to finish sand them and they all have turned pink. *Mostly the sap
wood. *Now they don't look so great.

This is the first time I ever used wood bleach. *Is there something I
could have done wrong? *Is there a way to get rid of the pink color?
Help!!

Ted


Hi Ted
I don't think you can reverse what you have done.
So I would suggest you either live with it or sand or turn it off.
The bleaching is almost always very shallow, but it takes a while
sanding,
if you can return it you would get it dome a lot quicker.
Next time you have some mold just wipe it off with a dry rag, then get
a little drier place for it,
the mold stain from just a few days old does sand off easy
Have fun and take care
Leo Van Der Loo

George February 15th 08 10:05 AM

Wood Bleach
 

"Ted" wrote in message
...
I turned some wet apple into natural edge bowls. They turned out
great. BUT...

After a few days they started to get some black mold spots. I used
some wood bleach on them and it got rid of the mold spots and whitened
up the sap wood. They looked great. BUT...

Now they have been setting for about a week or so. I went out today
to finish sand them and they all have turned pink. Mostly the sap
wood. Now they don't look so great.

This is the first time I ever used wood bleach. Is there something I
could have done wrong? Is there a way to get rid of the pink color?
Help!!


The pink is probably a combination of chemistry, because the sapwood does
contain the chemicals which color the heartwood, and some leaching of the
extractives in the heartwood along the borders. Only answer I have to the
problem, and it's the same with cherry, walnut and the like, is to dry
things more rapidly. Also helps with the mildew.

Try blasting compressed air through the wood to kick out the maximum amount
of unbound water, and you might shorten the time it takes to get below 18%
moisture by a day or two. Mildew can make a lot of growth in two days.

The two-part wood bleaches are your candidate, but if you get them in the
heartwood, things can get splotchy.


Ted February 17th 08 03:32 PM

Wood Bleach
 
I sanded and sanded and sanded. It comes off with sanding. Not
perfectly white but it is pretty good.
Thanks. Ted

So I would suggest you either live with it or sand or turn it off.
The bleaching is almost always very shallow, but it takes a while
sanding,



robo hippy February 18th 08 02:21 AM

Wood Bleach
 
A lot of woods will do this, especially fruit woods. The sap wood is
white until exposed to air, then it goes red/orange/pink/yellow. I
figure it is a kind of oxidation. Some woods get darker with age, some
get lighter. Can't do much about it unless you put it into a vacuum
with no UV light. You can sand it out, and it will still go pink
again. Welcome to the world of wood.
robo hippy
On Feb 17, 7:32*am, Ted wrote:
I sanded and sanded and sanded. *It comes off with sanding. *Not
perfectly white but it is pretty good.
Thanks. *Ted

So I would suggest you either live with it or sand or turn it off.
The bleaching is almost always very shallow, but it takes a while
sanding,



JD February 18th 08 01:33 PM

Wood Bleach
 
On Feb 17, 8:21 pm, robo hippy wrote:
A lot of woods will do this, especially fruit woods. The sap wood is
white until exposed to air, then it goes red/orange/pink/yellow. I
figure it is a kind of oxidation. Some woods get darker with age, some
get lighter. Can't do much about it unless you put it into a vacuum
with no UV light. You can sand it out, and it will still go pink
again. Welcome to the world of wood.
robo hippy


I hate to go off topic but..... Robo, you mentioned oxidation and I'm
inclined to agree, but how would I promote oxidation. Here is the
reason I'm curious. I picked up some osage orange from a ladies yard
that had been cut for several weeks. Instead of being the typical
yellow color, the cut ends of the logs were a beautiful red color. I
had never turned osage, so imagine my surprise when I cut it open and
found out the wood was actually yellow. I like the look of the wood as
it is, but I'd like to see some of the red color that I saw when I
picked the wood up. I know that bleach is an oxidizer, does anyone
know if the red appeared in the osage because of oxidation, and if it
did, would bleach bring out more of it? Hmmmmm..... sounds like an
experiment could be coming on, but didn't want to repeat something
that has already been done.

THanks,
JD

A Lurker February 18th 08 11:42 PM

Wood Bleach
 
JD wrote in news:42764279-2717-4458-a15d-
:

I hate to go off topic but..... Robo, you mentioned oxidation and I'm
inclined to agree, but how would I promote oxidation. Here is the
reason I'm curious. I picked up some osage orange from a ladies yard
that had been cut for several weeks. Instead of being the typical
yellow color, the cut ends of the logs were a beautiful red color. I
had never turned osage, so imagine my surprise when I cut it open and
found out the wood was actually yellow. I like the look of the wood as
it is, but I'd like to see some of the red color that I saw when I
picked the wood up. I know that bleach is an oxidizer, does anyone
know if the red appeared in the osage because of oxidation, and if it
did, would bleach bring out more of it? Hmmmmm..... sounds like an
experiment could be coming on, but didn't want to repeat something
that has already been done.


JD

I've been turning a few pieces of Osage Orange. It is a nice wood with
and has good grain, but the light yellow dust and shavings stick to and
discolor everything. Yes it is bright yellow when being worked but
darkens considerably when finished. No real reds, but a dark yellow brown
or orange.

Jerry


--
Posted via a free Usenet account from
http://www.teranews.com



All times are GMT +1. The time now is 09:37 AM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004 - 2014 DIYbanter