What cut to use.

[Mark Bolam]

Nah, pretty sure he describes it as a parallel cut either side then a back cut.

 

The one we use on heavy laterals, which I have always called the CB, is probably the Golden Triangle that Peter is on about, although that may have been a ladyboy bar I used to frequent?

 

It's all very confusing.

[Spruce Pirate]

For what its worth the golden triangle is what I'd call a double v.

 

I think Coos Bay is similar, but I've only ever had it described to me. Would need to see it to understand it properly.

[felixthelogchopper]

Nah, pretty sure he describes it as a parallel cut either side then a back cut.

 

The one we use on heavy laterals, which I have always called the CB, is probably the Golden Triangle that Peter is on about, although that may have been a ladyboy bar I used to frequent?

 

It's all very confusing.

 

I think you might be confusing that with The Blue Oyster Bar.

[Peter]

For what its worth the golden triangle is what I'd call a double v.

 

I think Coos Bay is similar, but I've only ever had it described to me. Would need to see it to understand it properly.

 

CB can be used with or without a sink cut. Cut each side of trunk, leaving a strip of uncut timber in the direction of fell. Cut remaining strip from rear. No directional control, just releasing to the lean and minimising risk of barberchair.

[Pete Mctree]

CB can be used with or without a sink cut. Cut each side of trunk, leaving a strip of uncut timber in the direction of fell. Cut remaining strip from rear. No directional control, just releasing to the lean and minimising risk of barberchair.

 

Note - not recommended on a rotten stump - it's not funny watching the tree go sideways and bending your 30in bar through 90deg

[Spruce Pirate]

CB can be used with or without a sink cut. Cut each side of trunk, leaving a strip of uncut timber in the direction of fell. Cut remaining strip from rear. No directional control, just releasing to the lean and minimising risk of barberchair.

 

OK, thanks. So why wouldn't you put a sink in? Or why would you? Does it make any difference? Side cuts would be parallel to direction of fall, presumably level with each other? The back cut would be at the same height as the side cuts? Does this cut work on any size of timber?

[mistahbenn]

Putting a sink into a heavy leaner will trap the saw.... thus no sink is needed. Its more of a release cut than a felling cut.

[Peter]

I've tried it both ways, on a very heavy head lean even putting a small sink in can result in a stuck saw.

 

On a lighter head lean a conventional cut but removing some of the hinge so you can power through the back cut faster.

 

Side cuts parallel to direction of lean yes, back cut at same height or the whole exercise is pointless, only used it on up to 24" dia personally.

[Spruce Pirate]

Very heavy leaners I normally double v, or golden triangle, call it what you will, but its always good to learn new things. Easy enough to get the saw pinched taking out the double v and now that I think about it, it makes sense not to gub it as it will pinch on a heavy lean. So, next question, how deep do the side cuts go? A third removed each side? Presumably also quite easy to pinch the saw at the underside of the lean when putting in the side cuts?

[Peter]

A third is good, as long as you read the direction of lean correctly it won't trap the saw.