Corrosion only in liners.

[Fright_Fox]

Hello I’ve had a delica in vg10 and an Endela both get corrosion only present on the liners, the blades themselves are always fine. The knives get covered in sweat and wiped down. Is this normal? Thanks.

[vivi]

you said it yourself. the blades get covered in sweat and get wiped down. that means the liners are too, but aren't getting wiped down.

I have the same issue. I'd consider a Pacific Salt or a model with coated liners like the DLC Manix XL. I don't have that issue with those models.

[ugaarguy]

Yep, I've had it happen with a few Spyderco knives in the past. Those knives had minimally finished liners. I haven't had the same problem with a competitor's knife that had fairly well polished liners. More recent Spydies I've bought have similarly well polished liners. I still prefer knives like Ti scale frame locks, Spyderco's Salt series back locks, and similar knives that don't have liners as extra insurance though.

[JD Spydo]

This sounds like a guy who needs TUF CLOTH from Sentry Solutions. That product usually does good in preventing corrosion. I've carried Delica and Endura models in the past and have not yet had this problem. But I'm also wondering if this guy lives close to a salt water environment? That could change all the rules.

[The Mastiff]

I treat my knives including the liners with tuff glide when I get them. I never take them apart but I do clean the insides with paper towels when needed. My liners might have some corrosion in places I can't see , I don't know. I don't let it bother me though. I have knives going back to the 60's ( not Spyderco) that aren't built as well or with as good materials and they still work fine so I expect my Spyderco's will do at least as well even if they have corrosion on the liners somewhere I can't see. In perspective a little corrosion on the liners hurts nothing. If it does bother you just do the maintenance and get rid of the corrosion.

[James Y]

I wonder if the liners were given a mirror finish at the factory (like the finish on SAK blades) if that would help lessen this tendency. And if so, how much extra work might that entail, and how much might that increase the cost? SAK blades are mirror-finished, and they’re not expensive at all.

Jim

[araneae]

I wonder if the liners were given a mirror finish at the factory (like the finish on SAK blades) if that would help lessen this tendency. And if so, how much extra work might that entail, and how much might that increase the cost? SAK blades are mirror-finished, and they’re not expensive at all.

Jim

It would certainly increase the price with a modest improvement in corrosion resistance at best. Polished blades can still rust. SAK knives use inexpensive steel and are mass produced by the millions(?) hence the cheap price.

Some people have corrosive sweat, polishing liners won't solve that. If its a problem, buying a Salt series knife is the best option.

[JRinFL]

SAKs use a steel that tips the balance well over to the corrosion resistant side and the trade off is edge holding. I believe they use aluminum liners or what ever those layer separators are called on SAK. Cold Steel uses hardened aluminum for some liners.
I don't worry about minor corrosion or rust on the liners as it will not effect function, it is merely an aesthetics issue. I look under my truck and see surface rust everywhere and that's meant to be normal, so I'm not going to sweat any on my liners.

[vivi]

Sure, a little rust is no big deal on liners. But ignore the problem long enough and lock function will start to degrade, rust will spread from liners to the blade (currently dealing with this on my g10 police 4) and other issues can present themselves.

viewtopic.php?f=2&t=84857

It's not the presence of a little rust that worries me, but the potential for it to grow worse and spread to areas where it will affect function. Pivots get tight and crunchy, locking mechanisms feel slow and gritty, stop pins stop rotating as designed etc.

[tonijedi]

Vivi is right, and this problem with the liners is why I like the Salt series so much.

[toxophilus]

I apply a coat of EEZOX to the liners with a q-tip; here's a link to a post about different rust prevention coatings; https://www.bladeforums.com/threads/a-n ... 2.1057567/.

[Abyss_Fish]

Yep this is always what happens to me as well. It’s just comes down to ease of cleaning. I carried an s30v delica at work (kitchen) for a number of months. When I decided to get something more suited to the task at hand, I cleaned it out. Finding a nearly solid layer of oxidation on the underside of the liners, and significant spots under the pivot as well. Fortunately it all came off fairly easy, which is a testament to spyderco’s testing and choice of steels.

But yeah, areas that are harder to directly wipe down will get the dirtiest the fastest. I’d recommend disassembling and cleaning your heavily used knives once every month or so.

[Fright_Fox]

This sounds like a guy who needs TUF CLOTH from Sentry Solutions. That product usually does good in preventing corrosion. I've carried Delica and Endura models in the past and have not yet had this problem. But I'm also wondering if this guy lives close to a salt water environment? That could change all the rules.

Yes sir I am 3 miles from the Pacific Ocean.

[Fright_Fox]

I’ll have to check the scale side of the liners but has anyone had rust on the outer side of the liners?

[JMM]

I make it a habit to break down most every new liner-containing knife and wipe the liners down with a silicone gun cloth, it's always worked great for me... for blades I stick with mineral oil, it's cheap, easily found, and food safe.

Cheers,

John

[vivi]

I’ll have to check the scale side of the liners but has anyone had rust on the outer side of the liners?

viewtopic.php?f=2&t=84857

yep