Chainsaw Grinder

[Able Fella]

Ive bought a Oregon chainsaw grinder from E-Bay, unfortunately it didnt come with a user manual, ive tried a couple of chains but cant seem to get them as sharp as they should, I have fitted new grinding stones, im assuming I havnt set the angles correctly, if anyone has experience with these please could you boot me in the right direction.

There are 2 different settings on the machine (degrees), if anyone could let me know what these should be set at I would be gratefull.

Thanks

[RobRainford]

at the bottom where you place the chain you want it to read 25 or 30 degrees depending on the chain, 30 is usually ok for most chains.

 

Look to the side of that, it goes up in 10 degree increments, you want to set it 10 degrees each way for each side of the chain, so the grinder will be grinding at an angle of 10 degrees.

 

at the back is the angle of the grinding stone itself, it goes from 90 to 45 or somthing i think, i found 50/60 was enough to give a curve on the cutter but not too much to undercut it and leave a hook.

 

the screw on the top of the moving 'head' is the limiter screw, use that to adjust your depth of the grinding before it stops, best to adjust this for each chain .

 

As you start each chain, set the grinder to take the right amount off the first one, assuming all the angles are correct (55 degs on the back, 10 on the side and 30 on the front) all you have to do is change the limiter screw and how much the grinder will take off. dont try and do half a cutter at once, you will just knacker up the chain straight away. Its best to do it in little bits and just take an edge off until the damage has gone. After its set to do one right, leave it, and just move the chain, it will file each chain to the same length. Plus it will make you think its doing it unevenly by taking more off one cutter than another, but thats just showing upo your own bad hand sharpening or someone elses! Trust me!

[geoff]

Thats a clear & meaningfull description,you should be writing their instruction book!

[Able Fella]

Many thanks Rob, if I get wrong now I will look a complete muppet!

[RobRainford]

Just don't put the chain on backwards! You'll never get them sharp that way!

 

If you use a square edged stone you can do depth gauges aswell. Set it to the proper height you need and a bit more And there's them done too!