It won't work on everything. A lot of wound acoustic strings won't give continuity.
Steel strings will work.
I use an ohm meter sometimes to check the middle fret with a rocker. Put the rocker on 3 frets and touch the first and 2nd fret....most of the time if it's a good level you won't get continuity from the first and second fret....one and three will give it...because there's a little relief between the 1st and third fret....unless the neck is perfectly flat and the level dead on.
this will show that the middle fret is microscopically lower.
Yes I know this thread is 7 years old but there was never a resolution posted and I have the very same problem. Anyone have a solution?
I skimmed through the thread, and I got to wondering what gauge strings the OP was using. Light gauge strings tend to buzz regardless of how level the frets are. For instance, if you're using .009's, then forget about it - it's gonna buzz. even .010's tend to rattle somewhat. Also, certain string brands are more prone to buzz (DR strings tend to cause inexplicable buzzing).
For most players, I feel that a very tiny amount of relief (.004"-.007") allows for lower action and less buzz.
Thanks for the reply. My feelings too. I tried everything I could and what was posted here to eliminate this sort of buzz to no avail. The odd thing is I have some guitars that don't buzz or just the tiniest amount with much lower action than this problem guitar. I can find no discernible difference between them but there is something that is different. The thing that nags me is I don't know what can be done to analyze it as all the tricks posted here have been tried by others as well as me. If there is anything I hate it is "I don't know". It's one thing to not be able to fix something and another to have no idea what the problem really is. Perhaps this sort of thing could be analyzed at a university with advanced imaging tools. That could pinpoint and offer an explanation to this kind of problem. It would be worth it if someone had the resources. Many others have this same problem and no one seems to have a hard solution.
The lighter the strings, the lower the strings the lighter the pick and the softer the attack.
The harder the attack the heaver the strings need to be and the higher the action
Tune the string than fret the first second and third fret and check the tuning each place.
What do you get? YOU KNOW WHAT TO DO.
I don't really have any contribution but surprised at at how few people, apparently, check action at the 17th fret. It's what I've always done on strats. Feeling weird now...
There's more than one way to skin a grimalkin.
When I have done all things adjust truss rod level fret board than strings lower the strings like I want them - all players want them very low action- I tune to pitch pull strings to set them tune again than I play all open strings and listen for buzzing strings and other things I use my thumb to pick with . Then I go to the first few frets and run each string on each fret listening for problem's
than several places up the neck then check if I want to lower the action and if so check each string as before I find each guitar wants to be played and setup as it likes to be. The strings weight neck material ,wood so I set it like it wants to be as the customer likes it than let him play it and tell him to take it and play it at home than it needs more adjusting it is a miner thing to do. When you ask them to play for you at the store they never play like they do at home so if you set it up then you wil never be right. Go for what the guitar tells you what it likes! DO NOT SKIP STEPS!
I hope this helps.