[quote name='absentmindeduk' post='1212675' date='Apr 27 2011, 02:29 PM']Hey guys, wondered if anyone may be able to offer a bit of help...
Question is really, when it comes to adjusting the truss-rod to see if I can get the action down a bit (it's terrible at the top to the neck), does anyone know what sort of measurements I should be looking at around the 12th?
The guitarist in my band does his guitars and suggested fr a guitar he usually just holds the 6th and 1st srings down (separately) at the first and the highest fret and there should be a tiny gap around the 8th..
Andy[/quote]
Andy,
The action and relief will depend on the neck radius. Here's a guide to what you should be looking to achieve, depending on your playing style:
Truss-Rod
Check your tuning. Install a capo at the 1st fret, depress the 4th string at the last fret. With a feeler gauge, check the gap between the bottom of the string and the top of the 8th fret
Neck Radius - Relief
7.25" - .014"
9.5" to 12" - .012"
15" to 17" - .010"
Using an imperial ruler, measure distance between bottom of strings and top of the 17th fret. Adjust bridge saddles to the height according to the chart, then re-tune. Experiment with the height until the desired sound and feel is achieved.
Neck Radius - String Height Bass Side - Treble Side
7.25" - 7/64" - 6/64"
9.5" to 12" - 6/64" - 5/64"
15" to 17" - 6/64" - 5/64"