chain sharpening help !

[jeepmedic]

Hi !

I am having some chain sharpening issues...

I have a timber tuff chain grinder with a 3/8" wheel. I have been learning by trial and error how to sharpen my own chains, follow the directions, have all the angels set properly, grind @ 30* as noted on the chart for the stihl chain (3634
26 RM3 67) I am running.....have a Stihl 290 saw.

I can get them pretty sharp, the chains throw the little square perfect shavings like a new chain, but they only last about 10 minutes and then dont cut worth a darn anymore :msp_confused:

On an brand new factory chain I can cut about 3-4 cords no problem...and I am very cautious about rocks and keep it out of the dirt, cutting mostly fresh box elder right now.

What am I doing wrong ????

 

[Gologit]

Try asking this question in the Chainsaw thread or the Firewood thread. You'll get plenty of answers and information.

 

[jeepmedic]

will re-post. Thanks !