Jump to content
schemi

blue black spots

Recommended Posts

I have been working with leather for 9 years now and am self taught. I have had the problem of the blue and black spots on my leather after wetting. I know it is from contact with metal. I have always tossed my projects unless they needed to be dyed black. I recently found this site and have read about the oxolic acid but I cannot find it local and I do not have enough time to order any. Is there anything else I can use to remove these spots?

Share this post


Link to post
Share on other sites

I have been working with leather for 9 years now and am self taught. I have had the problem of the blue and black spots on my leather after wetting. I know it is from contact with metal. I have always tossed my projects unless they needed to be dyed black. I recently found this site and have read about the oxolic acid but I cannot find it local and I do not have enough time to order any. Is there anything else I can use to remove these spots?

Do you have a hardware store close by? Typically all of them sell wood bleach which is usually plain Oxalic Acid (check the label before purchase).

example of the most popular brand:

http://www.highlandwoodworking.com/savogranwoodbleach12oz.aspx

Share this post


Link to post
Share on other sites

My 4 year old goes to work with me every day so I would prefer not to have acid around cause sometimes he gets a little too curious. The lemon juice worked well so I am going to stick with it for now. Thanks for the help though.

Share this post


Link to post
Share on other sites

That's a great tip thanks.

Share this post


Link to post
Share on other sites

You will find "Barkeeper's Friend" in any cleaning aisle of grocery/hardware stores. It is oxalic acid, and I've used it successfully for several years now. Although the word acid appears as the ingredient it is classified in the same category as most household cleaners and the same care and caution should be used.

Share this post


Link to post
Share on other sites

You can purchase oxalic acid thru a pharmacy. It is a little expensive but a little bit of the stuff in some water goes a long way. After I mix it I keep mine in a soda bottle, its clear so be very careful with it around children because it looks like a bottle of water.

Share this post


Link to post
Share on other sites

I know this is old but the comment above about Bar Keepers Friend being oxalic acid intrigued me enough to go look for the MSDS sheet. I need to use it for getting rid of black spots on veg tan from metal snaps.

http://www.barkeepersfriend.com/files/file/MSDS/MSDS_BKF_Powder_2015.pdf

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...