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Milling & Saw Mills
Looking for another saw for milling - 075?
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<blockquote data-quote="BobL" data-source="post: 1410808" data-attributes="member: 14206"><p>Yep I agree, Janka hardnes is only one indicator. Silica uptake and encapsulation is another, the stickiness of the resin is another. No matter how sharp the chain is to start with, when the sharpness starts wearing off, all cutting that does not involve noodles includes a certain amount of wood fibre crushing/tearing. One factor that determines how easily this happens is the Shear Modulus of the timber and perhaps the degree of fibre interlock. We have a tree here called Tuart, it's Janka hardness is high but it seems much harder because of all these factors, once the chain gets in the slightest blunt it's like cutting something that is 25% harder than it is supposed to be.</p></blockquote><p></p>
[QUOTE="BobL, post: 1410808, member: 14206"] Yep I agree, Janka hardnes is only one indicator. Silica uptake and encapsulation is another, the stickiness of the resin is another. No matter how sharp the chain is to start with, when the sharpness starts wearing off, all cutting that does not involve noodles includes a certain amount of wood fibre crushing/tearing. One factor that determines how easily this happens is the Shear Modulus of the timber and perhaps the degree of fibre interlock. We have a tree here called Tuart, it's Janka hardness is high but it seems much harder because of all these factors, once the chain gets in the slightest blunt it's like cutting something that is 25% harder than it is supposed to be. [/QUOTE]
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