Touching up the blade on a buzz saw

[Don P]

Yes, that tooth took a whack from something, probably embedded trash in a slab. He didn't keep the blade sharp and kept pushing it and it got hot, lost tension and now wobbles. Any circle blade will do that, from my 7" skill saw to the mill saw. I throw the disposable skill saw blade out at that point, anything bigger goes in for a tuneup. His shop is full of everything from edger blades to 60" headsaws.

Just as general info whenever sharpening any edge tool look right at the edge in strong light. A sharp edge splits the light, anything shining back at you is a flat spot, dullness. Sharpen the face, keep top dressing to a minimum.

[Al_Smith]

That thing could be 50-60-70 years old .You have no idea what it was used for  .Could have been fence posts,railroad ties old building materials which contained stones ,nails whatever that nicked a tooth or two .In reality it's not much different than a chain on a chainsaw because it could happen .Whoever had it which could be many people just ignored the tooth angles .Most likely didn't care or didn't know how to fix them . 
Now a theory,unproven on the blade wobble .Might be the blade,bearing/bushing  or arbor .
Like I said many owners .Who knows they might have pipe wrenched the arbor to hold it and used a 24" Rigid pipe wrench on the nut with a 7 foot cheater and  two 250 pound big men breaking the nut loose and bent it .  

[ButchC]

I am out and about today but will try to get some pics posted later

[CTPhil]

Well I got a 12" mill file and sharpened the blade.  I sharpened the tops because my arms just won't go in the angles needed to sharpen the gullet side with the blade in the saw.  I tried to take as little off as possible.  It made a huge difference, it cuts with ease now.  8) I also lowered the tractor RPM and the wave was reduced to nearly nothing.

Thank you everyone for all of the great help! 

[jerry sundberg]

Here is a site to explain how to sharpen a cord wood saw. Belsaw 10452 Buzz saw m...

[luap]

Good to hear it's working for you. One other operation a saw shop will do is restore the roundness of the cutting circle and restore the tooth height. Both of these will be out of spec after repeated hand filing.