04-12-2018, 06:39 PM
(04-11-2018, 08:24 PM)KnifeGrinders Wrote: An exhaustive explanation by EOU - also explains the specifications Acquisition Rate of 25 measurements per sec for PT50a vs 10 for PT50b, and the better precision of the PT50a.
BTW shouldn't Specifications be added as the last page in your PT50_Series_Manual_A_B_C.pdf ?
(04-12-2018, 11:25 AM)Ken S Wrote: There is a logical very low cost option. The problem with the paper cutting option is the variety of papers used. In itself, it is not a bad method. Spending around $5 US for a box of quality 20lb copy paper goes a long way toward making the tests consistent. With care and practice, one can soon develop a feel and an ear for good cutting.
Admittedly, this method has its limitations. It provides no repeatable numeric of sharpness like BESS. However, for the more casual sharpener or those on a tight budget, a well regulated paper testing routine has possibilities.
I have been corresponding with another bessex member who just purchased a PT-50A, the top of the line. He chose wisely. He is a machinist, accostumed to working within very tight tolerances. Regardless of his actual sharpness needs, he would not feel comfortable working with a tester which did not have the highest accuracy.
I was quite content with my KN-100, and am very happy with my original PT-50. However, in hindsight, if it had been available at the time, I should have purchased a PT-50A. I had no idea then how involved with sharpening I would become.
Ken
Another problem with cutting paper is it makes blade dull. I found that cutting the A4 three times increases the BESS score by 20.