Dull edge after cutting sandbags?

Guys who open concrete bags with their knives see similar results. It is normal when you are running a sharp edge against something highly abrasive.



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Sounds like the perfect use for a normal utility knife. I was doing some landscaping on my yard and was cutting landscaping fabric and a just a few swipes against dirt would kill the edge.
 
The Hawk said:
Sand is abrasive, even though it feels smooth to the touch. Don't be too hard on yourself. We have all learned things the hard way.
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^^Agreed. It’s easy to get caught up in the “super steel” thing. Some are just better than others in certain ways. Remember too that factory edeges can be sharp but all too often they are also done with coarse belts/wheels for speed and those may not be the most durable. Doesn’t take as much to knock off all those little points and lose the edge.
 
Stickgunner said:
I haven't brought it up before, but his company has stolen from me. I believe it was the pic below that I have hosted on Flickr as a desktop wallpaper for people to use (personal use) on their computers. He took the image, slapped a pic of a Bark River knife over it, and used it as a print ad for one of the Knife / Blade magazines. I bought the copy of the mag so I could go back and get paid (or trade in blades) for the unlawful use of a copy righted image they used without permission. I guy I knew wanted to borrow the mag and made a big fuss about it saying he would get it back to me after a plane ride. I never got it back, and the mags were out of print by the time the guy told me he didn't have it anymore.

If anyone has an old magazine with the below pic being used, or any of my images being used for adwork, I would appreciate it if you let me know.



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If you intended that album to be used by the general public as desktop wallpaper, you might need to change the copyright setting, since "all rights reserved" would prohibit making copies.
You probably want something like "Attribution-NonCommercial-NoDerivs" - public can make copies and distribute the image, but can't use it for commercial purposes or make any derivatives.
Since you didn't authorize a derivative work, you may want to talk to a copyright attorney to see if you have a claim for damages.
 
OrangeBlueOrangeBlue said:
If you intended that album to be used by the general public as desktop wallpaper, you might need to change the copyright setting, since "all rights reserved" would prohibit making copies.
You probably want something like "Attribution-NonCommercial-NoDerivs" - public can make copies and distribute the image, but can't use it for commercial purposes or make any derivatives.
Since you didn't authorize a derivative work, you may want to talk to a copyright attorney to see if you have a claim for damages.
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Agreed, but the cop side of me hates to see lawyers involved in anything. You are 100% correct though.



ETA- Can you still see that post? The second post I made about the image theft vanished or doesn't load for me....
 
You’d think each grain of sand would just get deflected off the edge. That the blade would just push them aside and glide through, but alas no.

This is the argument against super steels, they will still get dull, then be harder to sharpen.
 
In general, sand is tiny silica rocks. Silica and rocks dull any knife.
So will gypsum board/drywall, for that matter.

Next time use a Stanley or other box cutter/utility knife to open sand bags. Save the edge on your good knives.
 
Stickgunner said:
LOL, you and your better half probably hate more lawyers than I do!! :p
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Hell yes we do. The legal industry is a relatively small world, and word gets around regarding who's got a bad reputation. It's sort of cliché, but one of the biggest advantages a criminal defendant can have is a defense attorney (PD or private, but particularly the PDs) who's got a good relationship with the prosecutor. I was much more likely to be open to haggling on a plea with an attorney who isn't a jerk. Last month, we were on our first vacation without the kids in 15 months, and a private defense attorney was trying to get a no-file and kept bugging her. That strategy was not in the client's best interest...
 
Yeah, the list of things you can cut with a knife are limited if you expect to maintain a decent edge for a while.
Cardboard, for instance, contains a lot of random stuff including silicates as well.
Some woods, like teak, also contain a lot of minerals that will dull edges faster.
a bag of sand would do it for sure.

My wife snickers when I reach for a box cutter to cut particularly harsh things.
I spend a lot of time maintaining those edges though, so I'm happy to beat up a box cutter.
 
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