logbutcher:
I have tried the GOL thing and like parts of it. However, I would not want to decrease the size of any craftsman’s tool chest, and that includes the knowledge tool chest.
Recommendation; don't limit yourself to just one technique.
I do very much agree that small faces are one of the primary contributors to barber chairs, if not the primary. Of all the barber chairs I've seen on stumps in the woods, they
all had small faces. By that I mean shallow into the tree, like a GOL notch
for depth.
By all means, make a high face, but don't short yourself on the depth to just a puny 25 percent in. Float that bar and get a decent face.
And take some of that center holding wood out with a bore cut from the front and/or nip the holding wood at the corners.
Sorry, but I'm gonna drop the Open face/bore the back technique for barber chair potentials. From now on it’s gonna be Open deep face/nip corners/bore the back.
Granted, that is not specified at
http://www.memic.com/publications_library/ProductionFelling.pdf on pages 12 and 16.
But I just can't limit myself after seeing all those shallow faced barber chairs and reading what JimL and Tree Sling'r have to say. Getting down to a 1" or under holding wood hinge is just not enough. I'm gonna use every part of that knowledge tool chest.
(Trivia: My experience has also taught me that the holding wood/hinge will not stay intact anywhere near to the ground on dead trees, rotten wood and drought trees. Additionally, the width of that hinge needs to vary with different tree diameters etc., I.e. a narrow hinge will pull out soon on a bigger tree. What is narrow varies as you go from an 18" tree to a 4 foot tree. So I'd recommend that fallers beware of any specific holding wood rule and use knowledge to vary that holding wood width to get close to or achieve that 'to the ground' control.)
I'm currently putting together a powerpoint on strengths and weaknesses of Open Face Felling and would appreciate any photos or thoughts.
I'll be putting a draft out for comment in a couple months and would be thankful for any thoughts then also.