MyTreeLessons.Com

Disclaimer

 

Do to tremendous forces coursing up and down a spar during the changes in leveraged force in felling a tree; a spar can give out and split with fatal consequence to fellar.  Any spar, has only so much strength; and can give out under strenuous duty. 

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Possible ways to use this same push force (partially by giving relief in 1 face, only pushing 1 face): Forced Support Loading