***Oxalic Acid Wood Prep?*** - Woodworking Talk - Woodworkers Forum
 
Thread Tools Display Modes
post #1 of 4 Old 05-30-2012, 11:15 AM Thread Starter
Junior Member
 
Join Date: May 2012
Posts: 5
View MarkBambisi's Photo Album My Photos
***Oxalic Acid Wood Prep?***

Has anyone any experience using oxalic acid to prep hard wood surfaces to improve the adhesion of the seal coat? If so please share.

In my case I'm interested in using it to prep bamboo (see my other posting) which is very hard, smooth and resistant to absorbsion especially after being kiln dried. Thanks for sharing!
(yes I know bamboo is not wood--it's a grass, it's a weed )
-Mark
MarkBambisi is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 05-30-2012, 11:52 AM
Senior Member
 
Join Date: Dec 2010
Posts: 305
View ed_h's Photo Album My Photos
I've used it for a deck of Ipe, which is a hard, dense wood. It removed the dark surface coating, making it look cleaner, and exposing the grain. The sealer seems to penetrate much better after oxalic acid treatment.

For just a little more, you can do it yourself.
ed_h is offline  
The Following User Says Thank You to ed_h For This Useful Post:
MarkBambisi (05-30-2012)
post #3 of 4 Old 05-30-2012, 02:21 PM
Senior Member
 
Join Date: Nov 2011
Location: Coastal NC
Posts: 1,160
View HowardAcheson's Photo Album My Photos
The used of oxalic acid in woodworking is primarily as a bleach/cleaner. It readily removes or lightens metallic and organic stains such as black stains on oak and water stains on most woods. In general, it does not alter the structure of the wood so I would not expect it to have much affect on the adhesion of a finish.

Howie..........
HowardAcheson is offline  
The Following User Says Thank You to HowardAcheson For This Useful Post:
MarkBambisi (05-30-2012)
Sponsored Links
Advertisement
 
post #4 of 4 Old 05-31-2012, 08:13 PM
Senior Member
 
Join Date: Dec 2010
Posts: 305
View ed_h's Photo Album My Photos
I believe one of the ways Oxalic acid acts is by decomposing cellulose on the surface of the wood. This suggests it would remove a thin layer of cells, along with any dirt, grime, or stains attached to it. This is probably why it is also advertized to remove "mill glaze". This may help sealers penetrate some new wood.

Oxalic acid also does have a special action on iron (and maybe other metallic) stains by a process called chelation.

For just a little more, you can do it yourself.
ed_h is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Woodworking Talk - Woodworkers Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Oxalic acid source. Cheap Pirate General Woodworking Discussion 0 06-11-2011 08:57 PM
Wood Prep jrflat Woodturning 10 02-17-2010 10:19 PM
oxalic acid HELP!! DBW Wood Finishing 3 09-07-2009 12:07 PM
Woods 'with-out' tannic acid I like snails General Woodworking Discussion 2 06-02-2009 10:59 AM
Tannic acid from oak shavings? KE6WNH Off Topic 9 11-21-2008 05:49 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome