I'd fell into the category of a young lad with limited experience - and i'm glad I saw this thread. Dind't know the term was 'barber chairing', but splitting trunks has crossed my mind on several occasions before, and thankfully it has never happened to me. I do a small bit of chainsaw work on a weekly basis in my spare time. Mainly its small scale wooding, but recently i have started practicing small tree felling (~12-14inch) on birch and ash thinnings.
I knew they were both brittle woods, noted for there fast 'cracking' 'snapping' effect rather then the 'slow chewy' effects of something like oak - but never imagined something so potentially dangerous could have occurred.
I noted this thread early this morning, just the pictures and thought very little of it, until i read a guys very harrowing life changing story a little further on (Thanks for posting that Leyburn). It was quite a heavy read and on reviewing the pictures again, i suddenly began to view them in a more respectful manner.
It would be great if any one else could add to the list of possible 'barber chair' trees for any other young lads/less experienced guys who may not be in the full know. So far from reading this thread ive got ash as the worst offender.
I suppose birch, sycamore, etc could be added to this list as well.
A few tips on how a barbers chair can be avoided would also be appreciated. I gather from the picture example given above, that this occurred because the knotch was too small, the back cut was too low, too much tension on the pull rope, didn't use a dog tooth cutting technique. I started thinking about how i might have gone about felling this tree if it had off been me, given the job brief, etc. Really helps putting things into perspective a thread like this, so thank you to all the contributors.
Also - a small dedicated space for this kind of discussion would be a great addition in time to come. Although this forum is dedicated mainly for the benefits of those directly involved in the industry, it is also a great source of information for the likes of myself, the 'domestic user', who after some formal training, and varied experience, wants to get to the next level, i.e. the sort of knowledge they can't teach you out of a book.
I have to admit after keeping track of this forum for sometime, i've noticed that safety related incidents are rarely discussed aloud ( I have to admit i don't cover every section of this forum in great detail). Perhaps on occasion this is for good reason, but it would be interesting to hear more on this.
Thanks Rowan.