Top plate angles?

[quercus454]

OK, would like to know opinions on the best grind on chains for dry hard wood. I cut lots of hard dry juniper firewood. Not big stuff. It is often dirty. I have been using a 3/8 lp full chisel 050 on a top handle Echo. Different brand chains often show different angles, although the chains are basically the same. Some are showing 25 degrees top plate and others 35.
Thanks and everyone have a great holiday.

 

[ElevatorGuy]

This sounds like a @Philbert question!

 

[Philbert]

The Australian guys always note how much harder some of their wood is to cut, especially, when bucking large logs.

Often, they mention trying carbide tipped (‘tungsten’) chains, but being dissatisfied.

The recommendation I most frequently see is:
- semi-chisel cutters;
- 25° top plate angle;
- expect to sharpen / touch-up often.

Some may even go to 20° for really hard wood.

You also want to avoid a deep ‘hook’ that creates a narrow top plate cutting edge. On a grinder, I would go 60 to 65°; files adjust visually.

‘General’ guidelines are:
25° hard or frozen wood;
30° general, all around mix;
35° soft woods.

Things might be different with a top handle saw and low profile chain. See what works for you.

Philbert