It also involves the density of the material. The closer the density of the material is to the density of the material doing the cutting the faster it will dull.
Also the temperature of the item doing the cutting can alter this effect.
Hence the saying "cuts like a hot knife through butter".
A hot kife will slice through plastic, which is not notably dense but strong.
Many factors must be weighed in when determining the cutting ability of a knife. To many to make an effective formula for comparison reasons.
I am trying to come up with a formula that can be duplicated for comparison tests. My first use of this formula will be with my upcoming Trailmaster -vs- Basic #9 test.
Here is part of my idea.
I will do the cutting on top of a digital scale and in front of a video camera. This way you can tell I am not apllying more pressure on one knife as compared to another. This should stop the BS of saying that a test was fixed. Each cut which goes over a specified pressure will not be counted. I will use 1" hemp rope for the test. At the end of the test I will devide the number of cuts by the cost of the knife and this will give a overall score for this test. My other tests will use similar methods.
BladeForums Site Owner and Administrator
Do it! Do it right! Do it right NOW!