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Some Surpises Cutting Cardboard w/ the Delica
- Thread starter me2
- Start date
I was cutting up boxes at home, so the "steeling" on another knife was just to see if the dullness was from chipping or edge rolling. This happened after 1 box, but the blade was still able to make it through the rest of the boxes, 2 -3 more. I've gotten the same kind of edge rolling on all the knives I've tried cutting this type of cardboard, from a Buck folder in 425M to a Griptillian in 154CM. The Grip is out, but I've resharpened all 4 others on the belt sander and leather, so we'll see what happens now.
WD-40 gets rid of that in 2 seconds. I used to dread getting glue stuck on the blade, and then one day I asked my dad if he had anything to clean it off. He told me WD-40, I tried it, and I've never been afraid of glue again.
DennisStrickland
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- Jun 24, 2009
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a little off subject but someone mentioned scotch brite pads as being abrasive. the all time quick edge duller in my experience are the floor pads used on buffers for cleaning hard surfaces. recently i cut up one floor pad with a super sharp vg10 blade , it was so dull from one pad that i thought i had been cutting concrete.
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- Jun 23, 2008
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I'm holding my breath for an answer to your situation me2.
Also, a little lighter fluid rids blades of that sticky glue gunk in a hurry.
Also, a little lighter fluid rids blades of that sticky glue gunk in a hurry.
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- Jan 29, 2009
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- 399
Or acetone.
I use a mini serrated covert applegate to cut up boxes and I have to put the stone to it about one a week. Cardboard sucks. It stripped most of the black paint off the knife.
I wont put my ZT300 near a box. lolol. Im not even curious to try. The blade isnt as sharp as my other knives but its definitly stronger. And I want to keep the blade black.
The weird thing is I have a $30 Gerber skeleton frame lock and I have never sharpened it. I cut mad boxes with it. The only reason I dont use it anymore is the thumb stud on the blade is too wide and scratches your hand when you put your hand in your pocket.
I wont put my ZT300 near a box. lolol. Im not even curious to try. The blade isnt as sharp as my other knives but its definitly stronger. And I want to keep the blade black.
The weird thing is I have a $30 Gerber skeleton frame lock and I have never sharpened it. I cut mad boxes with it. The only reason I dont use it anymore is the thumb stud on the blade is too wide and scratches your hand when you put your hand in your pocket.
Well, since I determined that the spots I felt were not chips, but actually small spots where the edge had rolled, I'm not as concerned. Every knife I've tried did the same thing. I have not tried my M2 Puukko blade yet. It probably won't roll, but its 5 to 8 HRc points harder than any other knife I tried. It also has a thinner edge bevel, at 10 degrees. I think its just the normal dulling that happens to every knife. I need to give it a good sharpening and see how long it takes to dull to the point that it won't slice open an empty grocery plastic bag. My Griptilian took 400+ inches before it stopped. The M2 Puukko took 550+ inches, so I expect the Delica to be in the 400" range. I may lower the edge to 10 degrees from it's current 15/side bevel for fun too.
DennisStrickland
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- Jun 24, 2009
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me2 try some 1095 by gec. you may be surprised at the performance on cardboard.
What is gec? I've done some Alvin Johnson style 1095 blades before and the performance was beyond expectation. I was never able to do it consistently though.
After resharpening the Delica on the belt sander, I tried it on some more cardboard. The same edge rolling happened. I resharpened it on the Sharpmaker and plain leather belt.
I just got done doing an edge flex test, which I don't particularly like, but its all I've got. I flexed the edge on a phillips screwdriver on both sides, up and down the full length. I pushed hard enough to see the edge deflect in good light, then ran the edge along the screwdriver while maintaining the flex. No burr formed that I can detect, no permanent bend, no dulling, no chipping. So it looks like the cardboard was rolling/dulling the edge as it did all the other knives I tried, but not chipping the edge.
Now I'm back where I started, using cardboard to test edge holding. It appears to do a decent job of dulling, and my new scale makes it easier and less subjective to judge just how dull by push cutting thread. I'm gonna keep using the soda cans too, just to have a reason to drink enough soda to stay up all night and test knives.
After resharpening the Delica on the belt sander, I tried it on some more cardboard. The same edge rolling happened. I resharpened it on the Sharpmaker and plain leather belt.
I just got done doing an edge flex test, which I don't particularly like, but its all I've got. I flexed the edge on a phillips screwdriver on both sides, up and down the full length. I pushed hard enough to see the edge deflect in good light, then ran the edge along the screwdriver while maintaining the flex. No burr formed that I can detect, no permanent bend, no dulling, no chipping. So it looks like the cardboard was rolling/dulling the edge as it did all the other knives I tried, but not chipping the edge.
Now I'm back where I started, using cardboard to test edge holding. It appears to do a decent job of dulling, and my new scale makes it easier and less subjective to judge just how dull by push cutting thread. I'm gonna keep using the soda cans too, just to have a reason to drink enough soda to stay up all night and test knives.