I'm about at the end of my rope. After the last several fret jobs i've done, I've been getting buzz on the e a and d strings. These are mostly electrics, though I've got the same buzz on a Collins that I did.
So, here are some specs. I've got the action usually set at 4/64" on the high e string fading over to 5/64" at the low e, measured by pushing the string down on the first fret and measuring at the 17th. I've got about .008 of relief in the fret board.
I finally made a fret buzz detector. It's a super bright LED, a 2.2k resistor, a 9 volt battery, an alligator clip on one end and a probe on the other. By capoing the strings at, say, the 3rd fret, I can pluck the string and touch the probe to each fret to find where the string is buzzing. What I'm seeing is usually that it's buzzing against the fret 2 to 4 frets above. So, the low e would be held at the 3rd fret, and be buzzing at the 5 or 6 or 7th frets or any combination thereof.
With a fret rocker I can't find any high or low frets. This is after I've already flattened the frets and recrowned them and buffed them out, first with sandpaper and micromesh, then buffed on the pedestal buffer.
All the tools and measurements show me as being perfect. Yet, I'm still getting buzz. If I do the fret job with guitar on the bench, or if I put it in the neck jig and do it, I get the same results. I even thought it was that I maybe wasn't crowning the frets enough and that it was buzzing against a too flat fret that it was being fretted against, but I came back in and redid a neck with my 3 way file instead of my diamond crowning file, and created a much sharper peak, and then continued on with polishing out the frets. I still get the same results.
Most of the buzz is inaudible through the amp, but some still comes through. And, it's sensitive to pick attack, if you brush the string straight across it gets better, but if you put any kind of pick attack where the pick digs in to the string at all, it comes back.
Any ideas? Or, is fret buzz just something we have to live with? I'm not setting these up with ultra low action, here. If it was 2/64" or 3/64" I'd understand, but his seems to be withing Fender spec....