Trilobite knife has rust stains already. What am I doing wrong?

[fred32176]

I also have a DGX Titanium M-Cut Safety Tool and it has one moving part. I rinse it in fresh water, dry it and use mountain bike chain lube on the pin that swivels. So far no corrosion.

 

[happy-diver]

I make blades from brass and then never take them out of the pouch again

 

[Sascha314]

Potentially there is galvanic rust even with stainless steel.
Rinse carefully especially after salt water dives, then dry it as good as possible.
Then store it away from other metalls, at least a couple of centimeters if possivble.

Sometimes it may happen with my cuttlery, if I am not careful. Using a lemon(acid!) I clean it as soon as I notice.

 

[DiveLikeAMuppet]

Cover the blade with copious amounts of silicone grease and then store in the sheath. Seems to work reasonably well without any washing or drying and the blade will survive few seasons or few hundred dives. Reapply grease every few months.

The ceramic cutters are OK for monofilament line but I had them break on thicker lines very easily - went through two when cutting a discarded fishing net.

 

[lexvil]

After rinsing and drying it and the sheath put it back into the sheath and stop looking at it

 

[Germie]

2 things doesn't exist in diving:
-Stainless steel
-Drysuits

The only thing you can do is put some grease on it. Then it will rust slower and probably everyday rinsing and drying is not needed for a long time.
We use vaseline for steel, and it works well (remember, the Netherlands are a skating country and we put our skates away with the steel greased with vaseline, we say when we go skating again 'take the skates out of the grease'.)

 

[Sascha314]

Vaseline is then probably not a lubricant but rather an insulator to protect it from chemical reactions as galvanic ones, which may occur even at a couple of cm with air between or worse water contact.

 

[wnissen]

I am fastidious about rinsing my gear, everything gets soaked in fresh water. Regs, lights, then BC, weights, and finally neoprene. Almost everything I have looks very nice, most of the metal is slightly scuffed but still shiny. But those trilobite blades just rust like crazy. Will try to get some replacement Ti blades.

 

[Still Kicking]

Leaving a blade in a ziplock with some wd40 for a few days or a week really seems to slow down the corrosion. Applying silicone grease occasionally helps too.

 

[Pearlman]

The ceramic cutters are OK for monofilament line but I had them break on thicker lines very easily - went through two when cutting a discarded fishing net.

How thick is too thick? Asking because I have a ceramic cutter too …