Hi All, With Glenn Reithers permission I am reposting his thoughts on fret calculation (from a facebook conversation) here so more people can get benefit from it.

The Readers Digest Version: Use the ExMi online fret calculator. It has a stretch compensation option that is perfect for high actions. I always use it. And yes, stepped bridges solve a lot of issues. 


The reasoning behind it: When I say high I mean higher than what you find on a Strat, not lap steel high. My answer to your question is that it makes it more slide-friendly while still being finger friendly. And most people are building with larger tolerances than what Fender or Gibson are - it's a rustic instrument after all - so a higher action means their frets are less likely to buzz. And because cbg's aren't as loud as a big body acoustic, you tend to dig in more with the strumming hand and that might mean fret buzz especially on lighter gauge strings. Even a low action will have a stretch factor its intonation. I'd love a calculator that has an action height component. My low action action would be 2mm at the 17th fret, but that was on a double neck that had a a slide twin on a very high action so I could assume you wouldn't play slide on the low action fretted neck. The highest playable and in tune action I've done was 5.5mm at the 17th fret. Yeah, it's very high. But with the stretch compensated fretting it plays in tune nicely.

‎"even though you play slide, you still want to play up and down the fingerboard fretting notes and chords too" Exactly. That's why I use the ExMi calculator with stretch compensation. You want an action that is high enough to play slide without clacking on frets all the time, but not so high that that the act of clamping down on a string alters the string tension so much that it plays sharp. With a stretch compensation factor in your fret scaling you can set the action quite high and still be in tune.

By the way, I didn't use stretch compensation on the aforementioned low action neck. The stretch compensation would have made some notes flat.

An interesting side note to this. The difference between the normal fret scale and the stretch compensated one is up to 1.5mm, which would be a huge error when cutting fret slots. That taught me to not obsess about fret scales that go to 3 decimal point. I just round to the nearest 0.5mm now.

Views: 741

Replies to This Discussion

Thanks for sharing

It was too good not too. I'm not sure if this will work but here is a PDF of his guide to Fretting.

Funny and informative.

Attachments:

Wow, thanks again!  You are awesome.

Hey I'm just the messenger it is all Glenn Reithers work. He is on this site and I believe posted it before..

RSS

The Essential Pages

New to Cigar Box Nation? How to Play Cigar Box GuitarsFree Plans & How to Build Cigar Box GuitarsCigar Box Guitar Building BasicsCigar Box Guitar Parts Store

Site Sponsor

Recommended Links & Resources


Discussion Forum

Fret template

Started by Randy Drysdale. Last reply by Tim Pannabecker Jan 28, 2019. 6 Replies

String gauge for 20" - GDG

Started by jawbone. Last reply by Uncle Fred Sep 22, 2014. 7 Replies

Cura saz scale length

Started by Cin wel. Last reply by Cin wel May 25, 2013. 4 Replies

fretfind

Started by Mike Sibinga. Last reply by wormil Jan 12, 2013. 3 Replies

Fret marking method

Started by Jillian Holladay. Last reply by wormil Jun 4, 2012. 2 Replies

Reverse calculations

Started by Martyn Hartley. Last reply by Martyn Hartley Apr 22, 2012. 2 Replies

Fret placement and stretch compensation - by Glenn Reither

Started by Penny Nelson. Last reply by Penny Nelson Apr 17, 2012. 4 Replies

Question on Scale Length

Started by Waid Jones. Last reply by Steve wootten Apr 16, 2012. 2 Replies

Scale length vs tuning note

Started by Matt Quinney. Last reply by Rand Moore Jul 16, 2011. 3 Replies

ukulele fret measurement

Started by ukeplayer. Last reply by Steve Pollack Mar 20, 2011. 6 Replies

String FAQ - let's get it going!

Started by Mama Mojo. Last reply by Mark Mercer Jan 27, 2011. 6 Replies

neck widths

Started by Bob Young. Last reply by Chuck Dubman Jan 23, 2011. 2 Replies

3 string guitar string gauges

Started by Bob Young. Last reply by DrByte Jul 22, 2010. 3 Replies

New things you can do with a guitar fret template

Started by Alan Roberts. Last reply by Chuck Dubman Mar 28, 2010. 5 Replies

longer box, shorter neck?

Started by Peter Taylor. Last reply by Pineee Johnny Feb 25, 2010. 3 Replies

violin Tailpiece??

Started by Penny Nelson. Last reply by Wichita Sam Jan 3, 2010. 1 Reply

Latest Activity

Taffy Evans commented on A.D.EKER's video
Thumbnail

Woman trouble (RAW BLUES) A. D .Eker 2022

"Hi, I just came across this. Great guitar sound and presentation. I enjoyed it. Well done. Taff"
3 hours ago
Robert Neal posted photos
7 hours ago
Downtown Vinnie commented on A.D.EKER's video
Thumbnail

Woman trouble (RAW BLUES) A. D .Eker 2022

"Dem tones taste like cake with a shot o rye on the side .That axe is extra sweet ,too.... Cheers my…"
7 hours ago
Downtown Vinnie commented on 3 String Blues's video
7 hours ago
Downtown Vinnie commented on Korrigan's video
Thumbnail

Radioactive

"Extra koolsville"
7 hours ago
Downtown Vinnie commented on Poorness Studios's video
Thumbnail

New River Train (a musical skit)

"Very kool.So you got a lotta mouths to feed.Yer gon hafta start charging rent in your…"
7 hours ago
Downtown Vinnie commented on A.D.EKER's video
Thumbnail

Why Dont Ye Ditty BCB SJP 2022

"My main machine man..Stompin good ,soulful as ever,sir."
7 hours ago
Shannon Necaise joined Rand's group
Thumbnail

The Mississippians

This group is for anyone who loves, has lived in, or is living in Mississippi. The state's…See More
8 hours ago
AGP # posted a video
8 hours ago
AGP # liked Doug Thorsvik's video
9 hours ago
AGP # commented on Downtown Vinnie's video
Thumbnail

Strength

"Nice Vinny, a Heart Felt Pick Me Up for our Brother, "The Anonymous Pick" :-)"
9 hours ago
AGP # liked Downtown Vinnie's video
9 hours ago

Music

© 2022   Created by Ben "C. B. Gitty" Baker.   Powered by

Badges  |  Report an Issue  |  Terms of Service

\uastyle>\ud/** Scrollup **/\ud.scrollup {\ud background: url("https://storage.ning.com/topology/rest/1.0/file/get/963882636?profile=original") no-repeat scroll 0 0 transparent;\ud bottom: 25px;\ud display: inline !important;\ud height: 40px;\ud opacity: 0.3 !important;\ud position: fixed;\ud right: 30px;\ud text-indent: -9999px;\ud width: 40px;\ud z-index: 999;\ud}\ud.scrollup:hover {\ud opacity:0.99!important;\ud}\ud \uascript type="text/javascript">\ud x$(document).ready(function(){\ud x$(window).scroll(function(){\ud if (x$(this).scrollTop() > 100) {\ud x$('.scrollup').fadeIn();\ud } else {\ud x$('.scrollup').fadeOut();\ud }\ud });\ud x$('.scrollup').click(function(){\ud x$("html, body").animate({ scrollTop: 0 }, 600);\ud return false;\ud });\ud });\ud \ua!-- End Scroll Up -->