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removed BO with acid but is now weird colour? 273

Full Member Posts: 233
removed BO with acid but is now weird colour?
« on: January 18, 2019, 02:31:25 AM »
i soaked a serrated blade in spirits of salt(hydrochloric acid i think) for a few days to get rid of black oxide but it came out cloudy looking and rough although still sharp.

anyone got any ideas how to get it SS looking again. ive tried vinegar with no luck and would rather not use sandpaper.


Global Moderator Point Of No Return Posts: 34,476
Re: removed BO with acid but is now weird colour?
« Reply #1 on: January 18, 2019, 02:39:40 AM »
You are going to have to sand and polish it.

Hopefully you didn't damage it too much with the acid.
Global Moderator He Who Has The Most Nuts, Wins! Posts: 50,040
Re: removed BO with acid but is now weird colour?
« Reply #2 on: January 18, 2019, 02:54:35 AM »
I sent a BO tool through a vinegar bath for a couple days and got similar yet not as aggressive results ::) They are more grey oxide now :facepalm: but I would think hydrochloric is a bit to harsh  :ahhh good luck with getting it back to SS and as Steve said I hope you didn't harm the metal with the acid :salute:
Full Member Posts: 233
Re: removed BO with acid but is now weird colour?
« Reply #3 on: January 18, 2019, 03:24:52 AM »
yeh i tried vinegar for a few days. but it didnt affect it at all. the acid took a couple of days to turn it a dull grey  so left it in there longer. :facepalm:

oh ill guess sand and polish with a dremel.

i was hoping to get the sandblasted look of the SS mp600 tools. maybe they arent sandblasted before BO is applied.
« Last Edit: January 18, 2019, 03:28:50 AM by kingofswords »
Global Moderator He Who Has The Most Nuts, Wins! Posts: 50,040
Re: removed BO with acid but is now weird colour?
« Reply #4 on: January 18, 2019, 03:28:55 AM »
Let us (me) know how it goes :D I may have to do the same :ahhh :facepalm: :D
No Life Club Posts: 1,149
Re: removed BO with acid but is now weird colour?
« Reply #5 on: January 18, 2019, 09:07:50 AM »
Why on Earth did you murder it?  ???
Point Of No Return Posts: 32,627
Re: removed BO with acid but is now weird colour?
« Reply #6 on: January 18, 2019, 12:43:56 PM »
It will be interesting to see if you can get the SS look  :popcorn:

fail to prepare prepare to fail
No Life Club Posts: 4,329
Re: removed BO with acid but is now weird colour?
« Reply #7 on: January 18, 2019, 01:01:46 PM »
yeh i tried vinegar for a few days. but it didnt affect it at all. the acid took a couple of days to turn it a dull grey  so left it in there longer. :facepalm:

oh ill guess sand and polish with a dremel.

i was hoping to get the sandblasted look of the SS mp600 tools. maybe they arent sandblasted before BO is applied.

Stop! I don't know how pitted it is from the pic, but before you use anything too aggressive (again  :whistle:), you'll be able to remove that oxide with a bit of Autosol and a cloth, or even a bit of Brasso if you want to retain some of the oxide and achieve a grey lustre... or even toothpaste. If you want to use an abrasive, use ooo or oo wirewool or even better red scotchbrite if you can get it.

Edit: Reading your post again - Autosol and oo wirewool would do it.  :tu:

Edit Edit: For future reference, Autosol and a cloth removes black oxide effectively.
« Last Edit: January 18, 2019, 01:12:33 PM by Fuzzbucket »

Point Of No Return Posts: 32,627
Re: removed BO with acid but is now weird colour?
« Reply #8 on: January 18, 2019, 01:42:56 PM »
Another great tip Fuzzy  :tu: :like:

fail to prepare prepare to fail
No Life Club Posts: 4,329
Re: removed BO with acid but is now weird colour?
« Reply #9 on: January 18, 2019, 01:57:49 PM »
Only because I've done similar myself... more than once...  :facepalm:

Point Of No Return Posts: 32,627
Re: removed BO with acid but is now weird colour?
« Reply #10 on: January 18, 2019, 02:00:24 PM »
Practice makes perfect Fuzzy  :D

fail to prepare prepare to fail
No Life Club Posts: 1,303
Re: removed BO with acid but is now weird colour?
« Reply #11 on: January 18, 2019, 02:47:12 PM »
Let's just say I know the feeling of starting to mod a blade with full intention of making it better and ending up with a cluster smurf that haunts your nightmares for years to come...  :facepalm:

Though, this looks solvable with polishing. :D

There is no magic therefore gadgets!
Global Moderator Zombie Apprentice Posts: 16,800
Re: removed BO with acid but is now weird colour?
« Reply #12 on: January 18, 2019, 04:35:57 PM »
Let's just say I know the feeling of starting to mod a blade with full intention of making it better and ending up with a cluster smurf that haunts your nightmares for years to come...  :facepalm:

Though, this looks solvable with polishing. :D

Yeah I have a few "corpses" in my garage  :facepalm: so I also know all too well. 

My approach now is to use the least aggressive method first and work from there. 

Esse Quam Videri
No Life Club Posts: 4,329
Re: removed BO with acid but is now weird colour?
« Reply #13 on: January 22, 2019, 08:33:17 PM »
i soaked a serrated blade in spirits of salt(hydrochloric acid i think) for a few days to get rid of black oxide but it came out cloudy looking and rough although still sharp.

anyone got any ideas how to get it SS looking again. ive tried vinegar with no luck and would rather not use sandpaper.

So Kingey, how'd it work out?  :pok: :pok:...  :pok:


 

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