On the right is the guitar body which holds up the instrument at the correct angle without the use of a footstool. How do you think the increased size and asymmetrical nature of the instrument affect the sound? How would the bracing work on something like this? Any other considerations?

Views: 57

Comment

You need to be a member of Cigar Box Nation to add comments!

Join Cigar Box Nation

Comment by Greg Turner on September 6, 2020 at 5:22pm

Hey Order 99. The soundboard is flat 1/8th inch panneling which is laminated. No bass bar planned. Sound post yes on the gamba. I plan to use an "I" brace on my gamba but the old department store bracing system ala cheap guitars on my guitar build. It calls for a bridge plate. I like your schemes too. Very sensible. 

Comment by Order99 on September 6, 2020 at 1:27pm

 So....what type of wood is your instrument soundboard made of (Mahogany,spruce, basswood, laminate? How thick will the material be? Will the soundboard be flat or arched? Do you want a bass bar to dampen the base and equalize the treble like a violin? Will you use a sound post to support the top and add vibration in the back(again, like Violin)? All of these questions will modify the pattern...

 Even in thin plywood boxes I have started to add an inverted 'T' micro-brace of 1/4 inch tapering to 1/16 inch-seems to make the sound a little richer somehow.

 If i'm lucky enough to find an actual thin wooden box (usually cedar) i'll use an 'A' brace of 1/2 inch tapering to 1/8 inch and touching the sides, and glue a 1/16 inch veneer where I want my sound holes (especially the 'f' and 's' holes.

 Nearly all my builds use a tailpiece-if perchance I use a fixed bridge I will add a bridge plate.

 Overkill? maybe-but I lost a 'quality' (not worth the $80.00) store-bought uke lately due to both a dearth of proper bracing and a bridge plate of less than 1/4 inch. At least it has a great neck tuners and nut, so expect to see a San Dona Cigar Uke later on...braced.

Comment by Greg Turner on August 25, 2020 at 1:34pm
Meant *department store bracing scheme
Comment by Greg Turner on August 25, 2020 at 6:52am
All very thoughtful responses Bernie. I was looking more for a generalized approach though becaue I'm only currently thinking of a prototype. Hoping for a bracing structure which at least helps the sound a bit instead of hinders it a lot. I found the "department store guitar bracing" had become the defining sound of country and blues recording in their heyday cause that's all most people could afford. Later it became preferred for a down home sound and is even enjoying a resurgence. For cigar and winebox guitars with hardware store pannel tops, complex bracing don't make a lot of sense but I think a minimal bracing scheme does. I'll post a pic of that hardware store bracing scheme. Anyway, was still wondering how you thought having that extra bit of top would generally affect the tone.
Comment by Bernie Edwards on August 24, 2020 at 8:11pm

Forgot to say that you would ideally do this across a range of audio frequencies and the sound bars would then be placed to support the pattern/blend of patterns you choose.

Comment by Bernie Edwards on August 24, 2020 at 8:09pm

...correction to first line...'nodal'...apologies

Comment by Bernie Edwards on August 24, 2020 at 8:08pm

Ideally you need to establish the soundboard's noadal resonance profile. This would normally be done using special electronic equipment. However you might be able to get a good idea by treating it as a 'Chladni Plate' before fitting, maybe by fixing one edge in a vice and using a violin bow to excite it. A thin layer of 'silver?' sand on it would then show the nodal pattern.

These pages might be useful? https://www.instructables.com/id/Easy-Chladni-Plate/

Once you have established the nodal pattern then you can arrange the sound bars accordingly...I think I am right in saying these should be the areas that are NOT nodes? I am sure somebody on here will be able to correct me.

This looks an interesting musical instrument technology project!

The Essential Pages

New to Cigar Box Nation? How to Play Cigar Box GuitarsFree Plans & How to Build Cigar Box GuitarsCigar Box Guitar Building Basics

Site Sponsor

Recommended Links & Resources


Forum

crossover guitar.

Started by Timothy Hunter in Other stuff - off topic, fun stuff, whatever. Last reply by Timothy Hunter Mar 21. 11 Replies

Tune up songs

Started by Ghostbuttons in Building Secrets, Tips, Advice, Discussion. Last reply by Timothy Hunter Mar 9. 5 Replies

Duel output jacks

Started by Justin Stanchfield in Building Secrets, Tips, Advice, Discussion. Last reply by Taffy Evans Mar 8. 6 Replies

How to Get Your Own Music on Spotify

Started by Cigar Box Nation in Feature Articles. Last reply by Southern Ray Feb 21. 2 Replies

CB Bass Guitar

Started by Mi Rankin in Building Secrets, Tips, Advice, Discussion. Last reply by Justin Stanchfield Jan 27. 5 Replies

Latest Activity

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

Im Troubled (Tribute) Mc K Morganfield by BCB - A.D .Eker 2024.

"Thank you Poorness ! for loving it ! appreciated!"
11 hours ago
Southern Ray replied to Timothy Hunter's discussion just came accross this pickup idea on youtube.
" Very interesting. Thank you Timothy!"
11 hours ago
Kent Thurston updated their profile
11 hours ago
Southern Ray posted a photo

Punch Project!

She now sports gold metal CBGitty knobs, speaker and an Artec 2.5 watt speaker. Finished this in…
12 hours ago
Southern Ray posted a photo

Project Punch!

Gonna finally get back on this long-delayed project that is more than half complete. (The matching…
12 hours ago
Poorness Studios liked A.D.EKER's video
14 hours ago
BrianQ. left a comment for Rob (Uker) Porras
"Hope this helps?"
14 hours ago
Doug Thorsvik commented on Doug Thorsvik's photo
Thumbnail

Dueling Flatheads

"I appreciate the kind words Papa D! I have always loved the look of these cigar boxes. Glad to have…"
17 hours ago
A.D.EKER commented on A.D.EKER's video
20 hours ago
A.D.EKER posted a video

Im Troubled (Tribute) Mc K Morganfield by BCB - A.D .Eker 2024.

The recorded History By Alan Lomax for the library of Congres of the Blues, from Mc Kinley Morganfield (Aka Muddy Waters) the in this take recorded Tribute ...
20 hours ago
Papa D commented on Doug Thorsvik's photo
Thumbnail

Dueling Flatheads

"Beautiful..Nice work Doug.."
yesterday
Papa D commented on Papa D's photo
Thumbnail

american1 Sun Glo

"Thanx AGP & Doug..  4 more coming soon"
yesterday

Music

© 2024   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 -->