Hello everyone. I have a question about cutting sound holes in thin sheet metal.
I'm building a 4stringer with a nice 11"x8" or so metal box I want to cut a sound hole in the lid with out destroying it or cutting my hands up. So rather than just fire up my hole saw, I thought I'd better ask for help.

This is my first build using metal. I usually use wood.
Any advice, help, war stories etc. Welcome.

BlAck...aka Ron H

Views: 787

Reply to This

Replies to This Discussion

I have only ever did wood through holes but..
I used a dremel with cutting head to mark an x to each corner of the square I needed then bent the metal inwards. This also created 4 'flaps' that I used to secure the box to the wood with screws.

I have used a nibbler a lot for sheet metal.  Nibbler

They work well on thin sheet metal though I have also used them on 18 guage.

If you know an electrician, they probably have a set of knockout punches,,, same with an HVAC tech. Another option is to drill small holes in a pattern,, always use a piece of wood as a backer while drilling sheet metal, and have the metal clamped down.

I have to be honest I haven't built a metal guitar yet but I am getting ready to. that said I have been a millwright for several years and do a lot of metal work of all sorts. I'm also a blacksmith artist. I use A plasma cutter sometimes but It wouldn't work too well if you don't want to discolor the paint. I would drill a hole to work through and then use a die grinder to shape it or a dremel tool. A nibbler would work great too. These are some things that come to mind first. Good luck And have fun. Dave (aka Wascl)

Just a thought.. But can you get someone to shoot it with a hand gun? Instant cool holes.

I just want it to be clear that I LOVE this idea.

This guitar was built using a hacksaw, a scroll saw, and a nibbler.  It started off as server cases.

That's a great piece of work

Amazing!

The biggest problem drilling thin metal with a 118 deg drill tip is tear out, so make sure you drill through the tin and a backing board together, a good option for tin is a step drill, as it's less aggressive fluting is less likely to tear

What darryl said: Step Drill... unless you're looking for >1.25" or so...

Hole saw will work, but clamp the metal (securely) to a piece of wood, clamp the pair to your drill press base... if it were to catch, you could lose a finger...  or worse...

The hole saw will leave a terrible edge, but that's what files are for.


Punches work great, but they're not cheap.

Thank you one and all I now have a general Idea how to proceed.

I really appreciate your replies.

Ron H

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 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 Apr 10. 14 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

Latest Activity

Bernie Edwards commented on Randy S. Bretz's photo
Thumbnail

Off the Bench !

"The cherries make it really even more special!  Great project with a unique and special result!"
4 hours ago
Crazed Fandango replied to Rich Butters's discussion UK - Best Place to Buy Cigar Box's
5 hours ago
Crazed Fandango commented on David Woodman 's photo
Thumbnail

IMG_0749

"Amazing!"
5 hours ago
Crazed Fandango liked David Woodman 's photo
5 hours ago
Crazed Fandango posted a photo
6 hours ago
Rich Butters posted a discussion

UK - Best Place to Buy Cigar Box's

Hi all, I am living in Thailand and building CBGs for about a year.  I will be returning to the UK…See More
7 hours ago
Rob (Uker) Porras commented on Randy S. Bretz's photo
Thumbnail

Off the Bench !

"Im assuming the wood is cherry?"
10 hours ago
Rob (Uker) Porras commented on Randy S. Bretz's photo
Thumbnail

Off the Bench !

"Wow wee!!! That is gorgeous!! "
10 hours ago
A.D.EKER commented on A.D.EKER's video
Thumbnail

Up the Hill A D Eker 2024

"thanks kale !yup that shaker sure keeps the groove going , and this LACE is my fender in the CBG…"
14 hours ago
AGP # liked Ghostbuttons's photo
15 hours ago
AGP # commented on Randy S. Bretz's photo
Thumbnail

Off the Bench !

"A while in the making, But!, well worth the wait, another outstanding one off Randy Bretz Build,…"
15 hours ago
AGP # liked Randy S. Bretz's photo
15 hours ago

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 -->