Patina on my Gerber

In 1939 Joseph Gerber (advertising agency owner) had custom knife maker David Murphy make 24 sets of carving knife for some of his select customers. Catalog retailer Abercrombie & Fitch saw them and was so impressed with the quality of the knives they wanted to sell them. Thus was born Gerber Legendary Blades.
Oldwolf
Posts: 25
Joined: Tue Mar 13, 2018 4:02 pm
Location: North Carolina

Patina on my Gerber

Postby Oldwolf » Thu Mar 15, 2018 11:03 pm

I'm not sure which model Gerber my knife is, but I do like it a lot. I got it new in the late 70's.
Usually though, when I take it out of the leather case it has patina on the brass.
Wiping it down takes care of it.
But, is there a proper way to prevent patina, or do I need to wipe it down every few months as a patina prevention routine?
You can just see the beginnings of the green deposit in this photo.
Attachments
Inked20180315_185204_LI markup.jpg

User avatar
Steve Warden
Posts: 2305
Joined: Wed May 27, 2015 4:18 pm
Location: Cherry Hill, NJ

Re: Patina on my Gerber

Postby Steve Warden » Thu Mar 15, 2018 11:07 pm

First) Welcome. :D
B) I've heard leather may not be the best for long term storage
3) I've been wrong before
Take care and God bless,

Steve
TSgt USAF, Retired

But any knife is better than no knife! ~ Mumbleypeg (aka Ken)

User avatar
rea1eye
Posts: 737
Joined: Fri Mar 13, 2015 2:59 am

Re: Patina on my Gerber

Postby rea1eye » Thu Mar 15, 2018 11:22 pm

I always thought brass naturally gets a patina with time.

I wonder if Renaissance Wax would provide a barrier, therefore
holding down the patina development.

Bob

eveled
Bronze Tier
Bronze Tier
Posts: 805
Joined: Sun Oct 29, 2017 9:37 pm

Re: Patina on my Gerber

Postby eveled » Thu Mar 15, 2018 11:26 pm

The green stuff is called verdigris. Its harmless just wipe it off. Store the knife outside of the sheath. Do you happen to use mink oil on your leather? My dad did and his knives seem to grow more verdigris in storage than mine do.

User avatar
XX Case XX
Silver Tier
Silver Tier
Posts: 2771
Joined: Sat Oct 31, 2015 7:24 pm
Location: California

Re: Patina on my Gerber

Postby XX Case XX » Thu Mar 15, 2018 11:33 pm

Steve Warden wrote: I've heard leather may not be the best for long term storage

I completely agree. I took mine out of their leather cases long ago. You have to keep brass clean and wipe them down every so often or that green stuff comes back. I don't even store my fixed blades in their leather sheaths just in case.

___________
Mike
"If there are no Dogs in Heaven, then when I die, I want to go where they went". Will Rogers

I work hard so my Dog can have a better life...

tallguy606
Posts: 195
Joined: Fri Jan 16, 2015 6:20 pm

Re: Patina on my Gerber

Postby tallguy606 » Thu Mar 15, 2018 11:46 pm

I have used plastic wrap on the brass guards, etc of my fixed blades that are stored in a leather sheath. Helps, but even then, the green stuff creeps in. So even without direct brass/leather contact, it still forms.

ROGERGREEN
Posts: 24
Joined: Tue Sep 12, 2017 1:18 am

Re: Patina on my Gerber

Postby ROGERGREEN » Fri Mar 16, 2018 12:34 am

Leather contains Tannic acid which when contacted to brass will produce the green patina. I would recommend long term storage for knives in a padded zipper case. Even with that, brass will need to be periodically polished. I use Semichrome or Flitz polish.

Oldwolf
Posts: 25
Joined: Tue Mar 13, 2018 4:02 pm
Location: North Carolina

Re: Patina on my Gerber

Postby Oldwolf » Fri Mar 16, 2018 1:12 am

eveled wrote:The green stuff is called verdigris. Its harmless just wipe it off. Store the knife outside of the sheath. Do you happen to use mink oil on your leather? My dad did and his knives seem to grow more verdigris in storage than mine do.


Yes, Verdigris.
That's the correct name.

https://www.google.com/search?q=verdigris&ie=utf-8&oe=utf-8&client=firefox-b-1

Oldwolf
Posts: 25
Joined: Tue Mar 13, 2018 4:02 pm
Location: North Carolina

Re: Patina on my Gerber

Postby Oldwolf » Fri Mar 16, 2018 1:13 am

But, it sounds like the answer is to store it out of the case. Or, remove it from the case now and then to wipe it down, perhaps?

User avatar
MUD
Posts: 129
Joined: Sun Aug 14, 2016 2:37 pm
Location: DAWG COUNTRY

Re: Patina on my Gerber

Postby MUD » Fri Mar 16, 2018 1:39 am

It's still gonna go green.
I store all my knives that have leather sheaths wrapped in either Saran wrap or sandwich baggies to keep the bad leather rustmonster away. (With a little 3n1)
Haven't had a problem yet.

Haven't heard that about mink oil. My dad put it on his (and my) baseball gloves when I was kidding (he played a couple of years on a little minor league farm team). Always love the smell. Still use it on most everything I've got that's leather (sheaths to work boots).

The Ides of March!!!
Not a bad day, unless you're Caeser.

ET TU BRUTE!!
My name is Mud,
But call me Alowishus Devadander Abercrombie
That's long for Mud, so I've been told

hardman
Gold Tier
Gold Tier
Posts: 177
Joined: Mon Jan 18, 2016 5:15 pm

Re: Patina on my Gerber

Postby hardman » Fri Mar 16, 2018 2:26 am

Brass bolsters stored in a sheath will definitely promote verdigris. If left long enough, the verdigris will actually etch the brass.

A while back, I bought some Vapor Phase Corrosion Inhibiting plastic zipper bags. VCPI or even VCI for short. They are available in many sizes. They are used for long term storage of metal parts and pieces. The ones I bought are sized such that most of my folding hunters with brass bolsters (Camillus, Buck, Schrade, Case Shark Series, etc.) can be dropped inside, zipped closed, and THEN put in the sheath. The bags provide an effective barrier between the leather and the knife. And, the VPCI properties of the bag's interior provides added corrosion protection for the knife in general. When purchased in bulk, the cost of the bags can be as low as $0.03 - $0.05 each. I went in with several other collectors and we bought a case to bring the cost down. I also obtained some larger ones that are great for items like handguns.

They also make VCPI/VCI paper too. In fact, that is what Bear & Son wraps their knives in from the factory.
Gary

"Now it cuts like a knife, but it feels so right." Bryan Adams

User avatar
MUD
Posts: 129
Joined: Sun Aug 14, 2016 2:37 pm
Location: DAWG COUNTRY

Re: Patina on my Gerber

Postby MUD » Fri Mar 16, 2018 10:11 am

Thank you. Didn't know about VCPI.
I'm gonna have to check into that.
My name is Mud,
But call me Alowishus Devadander Abercrombie
That's long for Mud, so I've been told

User avatar
AR Norby
Posts: 139
Joined: Sun Sep 04, 2011 5:03 am
Location: Arizona

Re: Patina on my Gerber

Postby AR Norby » Sun May 27, 2018 12:40 am

On all my knives with brass bolsters & liners, about once a year or so I give them a good polish with either Brasso or Mother's Mag Polish. Keeps the brass looking nice and keeps the verdigris at bay. I don't really like the look of dull patina on brass.
Perception is Reality


Return to “Gerber Legendary Blades Knife Forum”

Who is online

Users browsing this forum: No registered users and 33 guests