Originally Posted by Mr. Sound
Excellent suggesteion Mike (i take it .900 is inches~23mm?)
I believe that's what it translates to. (Don't have a calculator handy!)
.900 is in inches. By doing this it should get you pretty close. I have bought some strings where I had every intention of going thru the body, but by doing the ".900 back" thing I mentioned I came to find that the winding length (where the string at the nut end tapers) was too short. The taper wound up on the fingerboard side of the nut and not the tuner side.
Keep in mind I've only tried the .900 bit with the E and B strings as those seem to be most problematic when going thru the body as far as the winding length is concerned.
But when I tried DR Sunbeams (that are on my American Standard 4 string Jazz) I HAD to install the E string thru the body. When I went thru the bridge the winding length far exceed beyond the E tuning peg. I didn't want to risk winding all that fat portion of the string around the peg and having it break. So like I said, I first top loaded it, moved the string back .900 and I could see that I had a lot more of the thinner portion of the string to wrap around the peg with no worry of breaking it.
Again, hope this makes sense.