Nearing the end of my current build, and starting to plan a 3 string paint can lid reso. I need plans/pix/advice about internal structure. I have a 8x10 craft box, thick sides but rather thin top/bottom. Gallon size lid (6.125" hole). Looked at the reso group but it's been dead for 5 years.

So do I need internal bracing/support for the top? If so, how? I'm thinking neck thru. Does the top need to be acoustically active or only the can lid, i.e. can the thru neck contact/support the top while being dado-ed out for the lid?

Views: 73

Reply to This

Replies to This Discussion

Hi James, my experience is from full size resonator guitars and cbg style dog bowl reso's, but the principals are the same. I'll to give you some info that will help you with your design. Part of the fun of cbg's is in designing ones own guitar.

1- The top can be flexible but thicker/stiffer than a regular guitar top. Full size reso's usually have the top connected to the back forming a sound chamber. Imagine a tambourine without the rattles.

2. I do not use a sound chamber see my recent post on a resonator guitar build its all shown there, you could adapt what you see there to your build.

3- I put bracing where the top feels/looks weak. In the photo bracing is around the pickup and sound hole cutouts. One cross brace [shaped like the back braces] between the large hole and the pickup hole. The large resonator hole is supported by the sides and tail block. 

4. I do not use neck trough style so the neck block is a bit oversize to take a 6 string neck.

5. You say top and bottom are thin??? In my world under 2mm is thin. 

6- My thinking is, if want your tin lid to work better stiffen the top so the string energy is driving that and not soaked into the timber surrounding it so easily.

7- Although resonator Guitars have a distinctive sound, the main function is to improve volume.

8- The smaller cbg is the size you are going to use. Position the lid/bridge assembly first then plot the neck position. Taff

So does the top of the lid take the load from the bowl, or does the bowl sit on those 2 rails and simply poke out the large hole in the top? I understand how a paint can lid will load the top, but I found a nice tinny ring bowl last night..

Hi James, the two rails you refer to are braces to stiffen the back. The sides are deeper than the bowl so it floats above the back suspended from the top.....

The only support is around the rim of the lid or bowl, otherwise you will dampen the resonator. This top is about 5mm thick in this case.

You could support the top like this if needed, or brace it.

This shows the extra bracing and thin veneer supporting the cutout areas. On a different cbg though.

Keep in mind that the top of any acoustic stringed instrument is the most important part, its where the sound starts from, after being excited by the strings, weather its tin, spun aluminium or timber, that sucker has got to vibrate the best it can.

Taff

Got it. Mostly. First let me say your skill set is far above mine. I really am a hack, flying by the seat of my pants. Thanks for the pix.

So you do (at least partially) add thickness to thin tops or areas, right? Is this pretty much it (for a neck-thru)?


Hi James, With your resonator guitar your idea in the drawing would work [but not for a full acoustic none reso instrument.

I would also suggest that the bridge be in the centre of the lid for best / better results. Then work out neck positioning. If you are supporting the top with a through neck I don't think you will need a post as a support too. Nice drawing by the way.

Taff  

"With your resonator guitar your idea in the drawing would work [but not for a full acoustic none reso instrument."
All my builds are electric primary, and acoustic only for quiet noodling.

"I would also suggest that the bridge be in the centre of the lid for best / better results. Then work out neck positioning."
Thx. It's small finesse like that that I don't have a clue about.

"If you are supporting the top with a through neck I don't think you will need a post as a support too."
On second look, I agree. This neck will be red oak. I also think the little supports aft of the reso will be instead the neck itself, the neck being dado'd for the reso.

"Nice drawing by the way."
Thx. 15 minutes with my wake-up coffee at 6am in Paint. Mostly filled rectangles.

I'm gonna show you a pic of the dog bowl I have later after i get this thing out of my head...

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

Forum

Neck mortising jig

Started by Rough Cut Tom in Building Secrets, Tips, Advice, Discussion. Last reply by Rough Cut Tom on Wednesday. 2 Replies

Swedish Inventor Creates "Ondophone" Diddley Bow Instrument!

Started by Shane Speal shanespeal.com in Feature Articles. Last reply by Paul Craig on Sunday. 3 Replies

Ukulele & piezo

Started by James Pobog in Building Secrets, Tips, Advice, Discussion. Last reply by Timothy Hunter Jan 11. 1 Reply

Fun with a 2x4 Bass - Build Your Own

Started by Shane Speal shanespeal.com in Feature Articles. Last reply by James Pobog Jan 9. 30 Replies

Blog Posts

Dual lap steel

Posted by Ron Lutz on January 9, 2020 at 2:42pm 1 Comment

My 3 Gitty Kits

Posted by Poorness Studios on January 8, 2020 at 9:20am 2 Comments

My CBG details

Posted by Paul scofield on January 1, 2020 at 9:22am 2 Comments

Latest Activity

Dave Lynas commented on Dave Lynas's video
Thumbnail

Song for Old 97

"Harmony made some great guitars for the money back in my day Daniel. My Rocket for one. Our…"
2 hours ago
Dave Lynas commented on Dave Lynas's video
Thumbnail

The Coo Coo

"Thanks AGP. My version came from the riff I found this morning. It sounded like a bird singing to…"
2 hours ago
Dave Lynas commented on Dave Lynas's video
Thumbnail

The Coo Coo

"Andries that’s the guy (most famous Dave). He pops up when you google me. A Brit I think.…"
2 hours ago
Dave Lynas commented on Dave Lynas's video
2 hours ago
Dave Lynas commented on Dave Lynas's video
Thumbnail

Old 97

"Thanks AGP. Thanks Nancy Kat. Thanks Daniel. Igloo is right D. Blizzard is right over Duluth. Looks…"
2 hours ago
Jeremy Wade replied to Jeremy Wade's discussion Pickup for cigar box banjo
"Thanks for the advice, a pre amp pedal is not something i thought of. I may try a wood top banjo…"
3 hours ago
Sean Murphy replied to Sean Murphy's discussion Tung oil vs Danish Oil?
"So having used the Danish Oil on my latest build (though I need to read the can and see,…"
4 hours ago
Sean Murphy replied to Sean Murphy's discussion Tung oil vs Danish Oil?
"I've been curious about the tru oil and will probably pick some up, give it a shot."
4 hours ago
Omar Mariani liked Viktor Bogdan's photo
4 hours ago
Don Craig liked Randy S. Bretz's photo
4 hours ago
Don Craig liked Jeffery A, Krueger's photo
4 hours ago
Don Craig liked Jeffery A, Krueger's photo
4 hours ago

Music

Loading…

© 2020   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 -->