big tops and interesting cuts

[Frank]

im assuming that was its purpose. never come across it before

 

No me neither but the more you think about it the more it works. Same principle as a dogs tooth.

[skyhuck]

am i right in thinking the gob was cut, then bored through to create hinge, then the last cut low for some reason i cant work out yet, they jump because the gobs have closed up..?

 

No, the bottom cut is the only back cut (I think) in effect there is no hinge.

[Tom D]

No me neither but the more you think about it the more it works. Same principle as a dogs tooth.

 

exactly, Ihave seen a vid of that technique b4 and used it, the dog tooth was developed for forestry use and minimum wastage, that technique requires felling higher so no good for forestry but fine for us.

[Steve Bullman]

No, the bottom cut is the only back cut (I think) in effect there is no hinge.

 

nope, look again, there is a hinge where it should be. its all in thirds roughly. gob is a third, then the hinge, then the back cut...at least thats how i see it

[armchairarborist]

ah the 'tail' drags on top of the cut stem, making it not fall straight down but carry forward a bit?

[Steve Bullman]

ah the 'tail' drags on top of the cut stem, making it not fall straight down but carry forward a bit?

 

not sure thats the reason, wouldnt be an exact science exactly

[Tom D]

Its just a bore and release with the back cut below instead of the dogtooth, at least thats the way i see it.

[skyhuck]

nope, look again, there is a hinge where it should be. its all in thirds roughly. gob is a third, then the hinge, then the back cut...at least thats how i see it

 

Right I see now!!

[Ben Ballard]

great vid steve,nice cuts:thumbup1:

[Frank]

I'm confused by it. A shallow gob and normal back cut would done the same thing. If he was worried bout tearing he could use kurf cuts. If he was worried bout barbers chair then a dogs tooth? Is there a bigger picture I'm missing?

 

Oh yeah Americans. Haha