I have noticed the sign on the picture. It says, "Knife sharpening". Sharpening knives for $6 is already a good deal. Anyway, you can sharpen your knife using a sandpaper. You just have to be very careful though.
If you have knives, it is not recommended to sharpen them by yourself. You might end up ruining the steel. I have folded buck knife, and I always make sure to use it properly. I take it to a sharpening shop to ensure its sharpness.
I have noticed the sign on the picture. It says, "Knife sharpening". Sharpening knives for $6 is already a good deal. Anyway, you can sharpen your knife using a sandpaper. You just have to be very careful though.
If you have knives, it is not recommended to sharpen them by yourself. You might end up ruining the steel. I have folded buck knife, and I always make sure to use it properly. I take it to a sharpening shop to ensure its sharpness.
I sharpen my kershaw pocket knife on my own. It's been nice so far, I try to do it regularly so it would always be sharp and avoid rustiness.