This all you need to make them better then factory . First timers takes about 5 sharpening to get the hang of it . And you'll be on your way .
key point is set vise to 10 degrees ( Oregon chains ) the right way and don't hit the chain links set the the stop down correct . you will say
wow I should of bought one along time ago ... ( that's what I said
and you need to get good at dressing grind wheel to right radius . Gauge and
instructions come with it . only thing was bad in the instructions was they didn't explain the 10 degree vise very well .. otherwise its priceless .
I have 2 one for sharpening and one to set rakers .. Had this style since 2011 ( 90 cord ago ) before that I had cheaper Oregon sharpener with 4 inch wheel .
These are my findings others may differ ..
Woodblocker55