, The test uses special pencils with different degrees of hardness to scratch the coating, which then determines its hardness If you are not familiar with this test, then you may be surprised at the comparison ratings for many of the coatings commonly used for finishing wood Looking at the pencil hardness
The Pencil Hardness Test By Mac Simmons. This article appeared in Woodwork, April 2000, p76. and is used here by permission.. A set of graded pencils. After doing some testing on various coatings for their 'pencil hardness', I was surprised at the results I got.
The pencil hardness test, also referred to as the Wolff Wilborn test, uses the varying hardness values of graphite pencils to evaluate a coating’s hardness.
Learn what to look for in terms of hardwood floor hardness and resistance to make Does hardwood floor hardness The wood grains used for the test can affect
The Janka hardness test measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an 11.28 millimetres 0.444 in diameter steel ball halfway into a sample of wood.
Pencil Hardness is a simple test that can tell you the hardness of the coatings you are using. August 20, 2005
Scratching the Surface of Pencil Hardness Testing Since coatings are usually applied to a part’s surface, it’s natural to consider what kind of