DLC coating vs cardboard

B

Bearzilla911

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Is a DLC coating on a knife hard enough to withstand cutting through a bunch of cardboard without scratching like crazy? I understand it is pretty hard stuff. Figured it couldn’t hurt to ask before I cut up a bunch of boxes from a recent move, and was debating using a Cold Steel Recon 1 that I am breaking in.

Thanks in advance for your input!
 
I sanded it off a ZT fixed blade and it was very resistant to being removed but there is sometimes sand like grit in cardboard that may leave faint lines in the coating. But from experience you will enjoy cutting the boxed much more with the Cold Steel than any box cutter you could ever buy. Plus it will give you a great chance to experience the excellent heat treat cold steel uses.
 
The PVD coat they use for some of the Recon 1’s now will not be as resistant to abrasion as the DLC type of PVD they used to use for every R1. Both should have good to excellent wear resistance, depending on the type of PVD.

The shiny finishes on CS PVD are DLC, and matte finishes are the more standard grade PVD’s.
 
I don’t have many coated blades, not my preference, however I have used kershaws DLC blades for years and have never been able to scratch one, they all still look brand new once the residue is cleaned off.

Cheap knives like gerbers “teflon” (paint), scratch just taking them out of the box, cold steels coated blades from 10 years ago wear somewhere in between those two. Will definitely scratch with use but takes a while to actually wear off. No experience with their newer coatings.
 
BJE said:
I don’t have many coated blades, not my preference, however I have used kershaws DLC blades for years and have never been able to scratch one, they all still look brand new once the residue is cleaned off.

Cheap knives like gerbers “teflon” (paint), scratch just taking them out of the box, cold steels coated blades from 10 years ago wear somewhere in between those two. Will definitely scratch with use but takes a while to actually wear off. No experience with their newer coatings.
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I have an old Kershaw avalanche S30V with a DLC coating, and the coating held up better than I would have thought possible. That Kershaw DLC coating had somewhat of dull finish (but looks great coated in mineral oil) but almost no wear after heavy use. It has been in the bottom of a tool chest for a while though; I should bring that back into rotation. Nevertheless, the cold steel DLC coating is more shiny, which made me somewhat skeptical but for no real reason, which is why I posed the question.

I don't typically prefer coatings other than on Carbon knives, and of course those do tend to wear off very quickly, but they are not usually DLC.
 
BJE said:
We need a box cutter subforum lol
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I'll start. My wife is an internet shopaholic and our extra bedroom has become her staging place for all of the cardboard boxes, I probably contribute too with my weekly mail calls. 😁 That said, I have a huge task at hand. I am considering replacement blades for my Kobart Utility Knife ... should I go with Kobalt replacements blades or is the value pack at Harbor Freight a better option? OR ... should I just F up the finish on my prized knives and use them? 🤔 Hmmmmm????
 
DennisM said:
I'll start. My wife is an internet shopaholic and our extra bedroom has become her staging place for all of the cardboard boxes, I probably contribute too with my weekly mail calls. 😁 That said, I have a huge task at hand. I am considering replacement blades for my Kobart Utility Knife ... should I go with Kobalt replacements blades or is the value pack at Harbor Freight a better option? OR ... should I just F up the finish on my prized knives and use them? 🤔 Hmmmmm????
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Use your prized knives! 😜 Can’t take em with you. May as well use ‘em! 😁
 
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