The benifit? You get a better formed limb when it heals.
Ive seen some guys do major tree pruning and leave all the stubs angled no matter if the branch was horizontal or angled. Too me it just seems that your leaving a bigger area on the branch for the tree to close up.
correction, Dan.
Trees don't heal....
...they seal...
THE SMALLER THE CUT, IT SEALS FASTER
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