letterbox cut?

[MattyF]

does any one know what a letter box felling cut is ?????????

im guessing its just a bored out hinge?

[RPA]

Sure thats how it was explained to me on CS34. If your doing a 2x bar fell and are on the limit of your bar length stick a letterbox cut in and increase your hinge thickness (effectivly same as 3x bar fell)

[Pete Mctree]

Yes it's taught in the large tree module, what used to be 2 1/2 times guide bar.

A boring cut is placed through the centre of the gob, then the tip of the saw is swung either way to cut the wood that would be unreachable by the smaller bar.

[MattyF]

been using it for years just never known it to be called that!

just spoke to my mum who said my old man had past his felling nptc's but was a bit confused when they asked him to do a letter box cut.

evan though hes been using using saws for 30 years profesionaly he finally got around to doing them!

But glad he passed i know he had quite a few bad habits thumbs on top of handles ect

[puwer]

Without splitting hairs, the letterbox cut would refer to the removal of the centre of the hinge when the tree has hung up leaving two supporting pegs either side.

 

A heartwood cut would be introduced from the front of the sink as posted fanning out the centre of the hinge, the remaining hinge would be approximately 50mm thick leaving a min of 6" either side of the fan.

 

Same meat, different gravy we have our lingo!

[MattyF]

so this would be classed as a letter box cut.forgot the big saw fellin this dead beach and had to make do with a 16" 357

[/img]

[RPA]

so this would be classed as a letter box cut.forgot the big saw fellin this dead beach and had to make do with a 16" 357

[/img]

 

Yes as I understood it(ex the letter box cut should have been at the same level as your felling cut not the btm of the gob).

Then again I am sure puwer will be correct and it is technically a heartwood cut.

[nuttyarb]

I was told by an old forester that they used the cut to prevent the core from pulling out as the tree fell

[darrenm]

I was told by an old forester that they used the cut to prevent the core from pulling out as the tree fell

 

I was taught to put the letterbox at the same height as my felling cut. Once I had bored in we were taught to fan the saw from left to right!! We were always told that it would prevent the core from pulling out or reduce the risk of a potential barbers chair?

[High Scale]

Without splitting hairs, the letterbox cut would refer to the removal of the centre of the hinge when the tree has hung up leaving two supporting pegs either side.

 

A heartwood cut would be introduced from the front of the sink as posted fanning out the centre of the hinge, the remaining hinge would be approximately 50mm thick leaving a min of 6" either side of the fan.

 

Same meat, different gravy we have our lingo!

 

You would cut out the centre of the hinge of a hung up tree? From the opposite side of the sink/gob, yes?