How to measure the lean of a tree with a plumbline.
NPTC Unit – 3-day Lantra Course, followed by an independent NPTC Unit Assessment. The Felling of Medium Trees course teaches candidates how to fell trees that are up to, but not greater than, twice bar length.
In practice, this means felling trees that are up to 30″ (mm) diameter with the size of saw that they undertook their basic chainsaw training takedownstump.barted Reading Time: 50 secs. To untangle a small tree pull the butt away from the stump. If it is still attached, cut it clear or use a felling lever. To shift medium sized trees, get one or two stout poles. Lever up the butt and slide it a few felling medium trees. Repeat this until the tree falls clear. Larger trees need winching.
Make sure the. Felling wedges are best for medium to large trees. They are inserted before the felling cut is completed and knocked in with an axe or an impact bar. Always use wedges made out of plastic or aluminium, so that you don’t risk damaging the chain if you accidentally cut into them.