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Hi, I'm Tonya with Chainsaw Shed and today we are going to talk about
the parts of a cutter.
The components of a cutter are:
Cutting corner,
Top-plate,
Side-plate,
depth-gauge,
Toe and Heel,
Rivet hole and Gullet.
The most critical part of a cutter is the cutting corner.
During the cutting process it is the first part of the cutter to come in contact with the wood.
It is were the top and side-plates meet
and it is the strongest part of the cutter.
Chainsaw users should pay particular attention to the filing angles.
Jutting from the corner is the top-plate.
Chisel type cutter top plates lifts the wood out just like a chisel would.
Some top-plates might be longer depending on the chain and the features.
The chains have a longer top plate are designed to extend the life of your chain.
On some chains a feature called a filing angle mark stamped into the top-plate.
This feature is built into many of OREGON's chains and
is referred to as witness mark.
This feature helps chainsaw users do
four important things: 1. Sharpen the chain at it's
optimum angle.
2. Sharpen the chain accurately throughout its useful life. 3.
Keep the length of the cutter top-plates equal.
4. Know when the chain has reached the end of its life.
Adjacent to the top-plate is the side-plate.
The side-plate cuts in conjunction with the top-plate and reinforces the top-plate.
The side-plate sets the cutting height and also set the cutting width.
Located in the front of the top-plate is the depth gauge. The depth gauge
sets the amount of "bite" which is how much wood is cut per cycle.
Older chainsaw users refer to the depth gauge as a raker.
The depth gauge set the thickness of the shaving.
There are two basic types of depth gauges:
ramped-shaped and wide-track depth gauge.
Wide-track assist in kerf clearance.
The depth gauge
is an integral part
of the anti-kickback system.
Both types require sharpening with a flat file. The Rivet
holes are located between the cutting plates and the bottom of the cutter.
The rivet hole is the only moving part of the chain.
The rivet hole connects the tie-straps to the cutter,
help making a complete chain.
This is the only part of the chain that really relies on oil.
At the bottom of the cutter is the toe
and the heel.
The toe is ramped to prevent damage to the bar while in motion.
The toe and heel are angled providing a lighter weight to the cutter and saves you money.
And finally the gullet.
The wider the gullet the better chip flow you get.
The gullet also provides a gap within the cutter to allow
access with a sharpening file.
Thanks for watching if you have any questions or suggestions please email me
tonya@chainsawshed.com
or call at 205-670-9681