Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Will this wok to sharpen a lawn mower blade?
Document: This is the very best sharpening system I have used. It will sharpen a stainless steel blade. The best usage is keeping a blade sharp as opposed to grinding a new blade from rough stock.
The only down sides are that an inexperienced set of hands can quickly damage a blade, destroy a wheel, or hurt themselves very badly. I recently ordered the Spyderco Sharpmaker and will compare them once that comes in.-If you know what you're doing, these can save you a lot of time and money.
When the blade is snapped off, the wheel will hurl it across the room. The lesson here is make sure every time the blade touches the wheel the orientation is correct.Paper wheels are easy to damage. Minor damage can be sanded off and the wheel redressed.Plastic sleeves inserted into holes in the paper don't exactly make for precise alignment with the grinder shaft so there can be some wobble.
I have several knife sharpening tools, but this is the finishing edge tool. I can easily get knives shaving sharp, and maintain them in a few seconds. I once approached the wheel from the wrong direction, and the blade sunk into the wheel and was thrown with great velocity. It put a deep gash in the wheel. Fortunately the accident threw the knife away from me, and no harm was done.
I have always done all my sharpening by hand using Arkansas stones; a grinding wheel was used only when a completely re-cut edge was needed. These wheels literally can make almost any blade razor sharp. The best part is that because of the hard paper wheels, it is really difficult to damage a blade, unlike a stone grinding wheel. I was reluctant to mount 8 inch wheels on a 6 inch grinder, but it works perfectly, allowing the extra space needed for a large knife.
Use them to sharpen knives to a razor sharp edge and we don't have to send them out any more. will pay for themselves in a short time.
I would recomend this to anyone that wants to sharpen their own knives. Do your research on how to use them and you will love them.
I had no idea how easy it would be to sharpen knives on these wheels. well worth the money .Thanks
I have tried many other sharpeners and with limited success, a friend suggested this one and I was amazed how easy and quick you can sharpen knifes, with just minimal practice I had razor sharp edges on all of my knifes. I highly recommend this system.
These paper wheels are good enough to be used on most grinders to sharpen knives of all kinds.The grit wheel is simple to use--at least until you have to replace the grit. Then it takes a bit of practice. (Watch a few youtube videos first. )The slotted wheel is very good for the final polish. It's sort like a paper strop.
Answer: yes