Cleaning knives

Joined
Sep 6, 2014
Messages
55
Hello all

Apologies if this is on the Forum somewhere but I've searched & didn't find anything definitive ;)

Can you advise on what's the best way to clean up an old knife? I got an old 1950's Belgian clasp knife the other day & it's really not pretty, in fact it's filthy.

Can I just dump it in water & scrub it? Should I spray it with WD-40 & scrub it? On the internet I even saw oven-cleaner mentioned (I don't think i'll be doing that :eek:).

I basically am new to all this knife collecting stuff & don't want to ruin a good knife by cleaning it badly. I have a few older ones but have just given them a quick wipe over & oiled the pivots with 3in1 oil if they weren't too bad. However as I buy more old knives, some are pretty grim, so tips on cleaning would be very welcome.

Many thanks
Dave :)
 
From my experience with these knives, you could put it in soapy water, but you need to make darn sure it gets dry afterward. And a good coat of some type of oil afterward. The plastic? covers are pretty durable, the knives were made to be used, but they will rust if not kept dry and treated.

I don't really use WD-40, so I'll leave that answer to someone with more experience with it.

And we like pics!
 
Hi Dave,

Check out the Maintenance, Tinkering, and Embellishment forum: http://www.bladeforums.com/forums/forumdisplay.php/794-Maintenance-Tinkering-amp-Embellishment

As Glen says, you could put it in soapy water and scrub it, the important thing is to dry it thoroughly afterwards.

I tend to start off with either a soak in an oil bath or a thorough squirt with WD40. Old clasp knives tend to hold a lot of dirt as well as rust, so my clean-up kit includes a nail brush, toothbrushes, bamboo skewers, pipe-cleaners, Q-tips, green pads, and sometimes, very fine wire-wool or emery cloth. Good luck :thumbup:

Jack
 
From my experience with these knives, you could put it in soapy water, but you need to make darn sure it gets dry afterward. And a good coat of some type of oil afterward. The plastic? covers are pretty durable, the knives were made to be used, but they will rust if not kept dry and treated.

I don't really use WD-40, so I'll leave that answer to someone with more experience with it.

And we like pics!

This is the way to go. I, personally, don´t like WD-40 somehow. I prefer the good ol' Ballistol oil. WD-40 is a rust remover, at least to me. I´ve tried it several times in past, but a good oil is much better, imo. (and even food proof).
But you should not forget to clean the knife properly after using Ballistol. It can damages liners of brass or nickel silver. There I use to go with simple mineral oil.

But for the "coarse" cleaning I use a ultra sound bath my wife uses for her glasses. Just some warm (not hot) water and some soap for a couple of minutes will remove a lot of lint and dirt. I use to keep the blades half-opened so that the soapwater can get into every part of the knife construction, including the parts of the pivot and inside the liners.

You will be surprised what will appear there. ;)
 
I too use an ultrasound. They're really cheap. and it's good for cleaning guns too.
 
Let's move this one to Maintenance, Tinkering & Embellishment.
 
Sorry for OT - But there was just some "head cinema" as we use to say in Germany The size of an ultrasound cleaner for a lever action gun or double barrel shotgun would be like a bath tube.

The only thing I don´t like the ultrasound cleaner is on dyed bone scales as there is always plenty of dye getting removed. But for cleaning knives it is great, in general. :)
 
You can scrub with soap and water with a toothbrush. Afterward, dry with paper towels, shake out excess water, and soak in WD 40 to remove all the residual moisture.
Heat helps, too.
 
THIS IS WHAT YOU DO for all cleaning needs:
~~You will need:~~
**A brass gun cleaning specialties brush (1-3$, available at a gun specialties/reloading store or cheaper than dirt.com. Do not use as an abrasive with Phosphoric acid products, or whilst you apply them, as the acid will dissolve the brass onto the steel and leave a yellowish anodized look. Brush over red or black oxides with gentle to medium pressure to remove. Will also remove hardened black oxides from "pits" in blades) This is HARDER than the black/red oxides of rust, but softer than the steel itself, which means it will remove oxides from rust but wont scratch the steel itself(black and red patina and exfoliate pits)
http://www.cheaperthandirt.com/product/2-PROBZDE
**Loctite Naval Jelly: (6-10$This is acidic, and will loosen up the hardened black oxides so you can better remove them with abrasives; a pink jelly that you use in controlled applications with an abrasive. Apply with a Q-tip or straw to Pits in knife or entire blade and let sit until the outsides of the pink gel starts to turn a light translucent brown (about ten minutes) Then use an abrasive such as metal finish pad or steel wool to buff at the oxides. Rinse with warm water and dry with paper towel. Finish with metal finish pad. Repeat until you get desired result)
http://www.homedepot.com/p/Loctite-16-fl-oz-Naval-Jelly-Rust-Dissolver-Bottle-553472/203009241
**Metal Finishing pad: (1-3$ You use this as a heavy abrasive, to buff out the larger scratches and imperfections such as "pits" created from long exposure to oxides on the steel, with enough elbow grease you can buff out anything with this. It is about four times as abrasive as steel wool, and just as versatile, also will not oxidize like steel wool)
http://www.homedepot.com/p/3M-4-3-8...14NA-CC/100179600?keyword=metal+finishing+pad
**Black Sandpaper in 600grit wet/dry, and 2000grit wet/dry: (5-7$ You use the 600grit wet/dry for medium polish with grain, and 2000grit wet/dry for satin/mirror polish)
http://www.homedepot.com/p/3M-3-66-in-x-9-in-2000-Grit-Sandpaper-10-Sheets-Pack-5925-18-CC/205424291
**K1 Kerosene (relatively cheap, and available at your local gas station. This works as an excellent penetrant. You use this to clean knives after using anything acidic; such as naval jelly, clr ect... Keep in mind that K1 Kerosene is a "petrollium distillate". Petrollium distillates will darken leather and wood if applied to them, so use relative caution when applying them to knives/guns with wood parts. I keep a mason jar of K1 Kerosene at all times. It works great and is cheap. If you are very worried about the wood on your firearm/knife, use a german gun cleaning solvent called Ballistol. Ballistol is another excellent penetrant that is good for both wood and steel on guns and knives and safe to use on both. Ballistol is 8-10$ a can and found at **some gun specialties stores)
**SNO-SEAL (For all leather restoration needs. A beeswax product that will make old dried and cracked up leather new and pliable again. Contains silicon, I have noticed it will darken leather just a bit like Rem Oil, well worth the tie and money. Will swell up dried and cracked stacked leather washers on a hidden tang knife as well. Safe for metal, unlike most leather conditioning products. Apply product with a rag liberally, and heat with a blow drier on medium-low heat. One technique I use is to spread gobs of sno seal onto the handle, wrap with aluminum foil as to keep the melted wax in, and leave the blow drier blowing onto the foil for 10-15 minutes on low-medium heat and then turn off the drier and let the wax and knife cool under the foil. This will work in as much product as possible, may take a couple applications)
**Rem Oil gun cleaner (6-8$ for a large spray can at most everywhere. Rem Oil is a gun cleaner and oil. Pretty nice stuff. It is a petrollium distillate, so use caution with wood FYI. Rem Oil is a dry feeling oil, that is not sticky or wet feeling to the touch. It does however have a sticky quality to it; it gathers lint like no other oil. Some folks hate this about Rem Oil and to those that want an oil that does not collect lint Go with Hoppes Weathergaurd (gander mountain, bass pro, specialties stores) Just apply to steel and wipe with rag/paper towel)
**00,01 Steel Wool (This will let you get into the hard to reach places of a knife; liner, frame, lock mechanisms ect and is cheap and available just about everywhere)
These are my most used products for cleaning knives. With all abrasives, remember to be careful of the "lines" of the knife blade. With all chemicals such as naval jelly, or clr, remember to keep an eye on your blade during application. Naval Jelly and CLR contain Phosphoric Acid. http://en.wikipedia.org/wiki/Phosphoric_acid#Rust_removal ** If you leave either of these products on too long, your blade will patina or pit. Remember to flush/clean your blade after application of acids with a penetrant such as K1 Kerosene or Rem Oil.
ebaySept142010014-1.jpg
(Above left: This is not my knife - This is what my Cattaraugus Quartermaster 225q looked like before I cleaned it up) Below are my knives
1008-182825_zpsd1d66c1f.jpg
(Cat. With Exfoliated pits **Naval Jelly, Steel Wool, Brass Gun Brush, K1 Kerosene, Sno Seal)
S7300569_zps0ba7e3b9.jpg
(Reground Cat.) **
S7300568_zps4a301c9e.jpg
(Reground Cat.) **
1008-115102_zpsed375f9f.jpg
(Treating leather with Sno Seal) **
S7300565_zps5167ce3f.jpg
(Reground Cat.)**
LegitimuscollinsmacheteWWIIBF022_zpsf00e0e99.jpg
(Unfinished Okapi Ratchet Knife)
LegitimuscollinsmacheteWWIIBF017_zps6f32e72a.jpg
(Unfinished Okapi Ratchet Knife)
SAM_0792_zps106a1ac4.jpg
(Rehandled and Finished Okapi Ratchet Knife; used metal finishing pad, steel wool, Rem Oil on blade)
SAM_0793_zpsf99f0605.jpg
(Rehandled and Finished Okapi Ratchet Knife) Made new handle from 3 aluminum breaker bars with 3/16" pivot screws.
SAM_0796_zps51f3e1d2.jpg
(Rehandled and Finished Okapi Ratchet Knife)


**Let me know if there is anything I left out, or can help with. Just spreading the wealth of information and knowledge.:thumbup:
 
Last edited:
This is the way to go. I, personally, don´t like WD-40 somehow. I prefer the good ol' Ballistol oil. WD-40 is a rust remover, at least to me. I´ve tried it several times in past, but a good oil is much better, imo. (and even food proof).
But you should not forget to clean the knife properly after using Ballistol. It can damages liners of brass or nickel silver. There I use to go with simple mineral oil.

But for the "coarse" cleaning I use a ultra sound bath my wife uses for her glasses. Just some warm (not hot) water and some soap for a couple of minutes will remove a lot of lint and dirt. I use to keep the blades half-opened so that the soapwater can get into every part of the knife construction, including the parts of the pivot and inside the liners.

You will be surprised what will appear there. ;)

What does the Ballistol do as far as damage exactly? I clean and wipe down all my guns and knives with Ballistol. I haven't noticed any ill effects. What should I be looking for? Thanks
 
What does the Ballistol do as far as damage exactly? I clean and wipe down all my guns and knives with Ballistol. I haven't noticed any ill effects. What should I be looking for? Thanks

One of Ballistol's qualities is removing copper fouling in guns. Unfortunately, copper is a major component in brass. So leaving the Ballistol on brass liners would not be very good, it will oxidize and break down the copper (you'll get that dark green gunk). If you leave it on nickel silver, it will have no ill effect. It's great on guns because it is breaking down the copper/lead build up in the barrel.

Ballistol is ok to use to clean a knife with. Just make sure to wipe it off completely and leave a coating of mineral oil in its place.

Frog Lube CLP is a great product to use for cleaning and protecting knives. It won't harm the brass or nickel silver parts. That's what I use most of the time. It's also food safe so I'm more confident in using on knives that will see food prep duty. If you use WD40 or Ballistol, make sure you clean it all off before you use that knife for food prep.
 
As most of us know, there are some collectors that shouldn't be "cleaned".
Ive had success with a few 3M products. Renaissance wax and SIMICHROME POLISH that comes in a tube, has always been my go to.
I was recently given an aerosol can of "get some", (yeah, sounds like a joke) from an owner at a local gun store to use for my business and give some feed back. I've used it on a few folders but seems really useful for garden tools. It doesn't have any silicon or petroleum. It's safe to use on enamels, paint, neoprene and rubber. So far so good.Haven't used wd40 since I was a child. I feel there are better oils/lubes available.
Kitchen knives always get mineral oil where I'm from.
 
If Ballistol harms brass, it would be equally harmful on nickel silver-which is basically brass with added nickel.
 
I have two old Masonic swords that I inherited. One is about 140 years old with scrimshaw ivory handle and 18K gold (probably plated) metal scabbard. The other is around 100 years old, same scrimshaw ivory handle, and silver plated scabbard. They both have a lot of etching on blades and some small stones. I have some simichrome paste polish and some Rust Free in a small squeeze container. Would these work on either the swords or scabbards or neither or both? Is there some other way to clean these up. Don't want to ruin them. They belonged to G. Grandfather and G. uncle.
 
Warthawg- I would use WD 40 and a cloth, only. The gold plating is extremely soft and easily removed. The blades are possibly nickel plated.
 
Thanks, that was my original plan. Just thought I could get some more ideas. Most often, the first thought is the best. Appreciate it.
 
Back
Top