Hi folks,
Found a nice box, then purchased a cone and cover from Republic. Hoping to build this over the holidays when work isn't such a grind. Now all I need's a ring for the cone - how do I construct that?
Any input is welcomed...
Tags:
Rand,
I had done several screw down reso's so I wanted to try the floating cone. I couldn't hear any significant difference. Either way is fun to build and sounds good.
Huntz
You may also enjoy this discussion we had a while back on adding a piezo pup to a resonator cone.
-Rand.
Oh, and you too, Vick. I guess I was reading this too late last night and thought Huntz had originated the thread. Sorry about that.
-Rand.
(Let's see, 9 hours ago would have been 1:00 am China time. It's 10:00 am here now.)
Hi Vick,
As for building a simple ring, you could build a dodecagon (12 sided regular polygon) as shown in the following diagram:
This info and diagram I put together with the idea of building a roundish banjo frame. But if you use, say, 0.5cm by 2cm trim wood, you could build a pretty nice looking ring to mount your resonator cone. Why 12-sided? Well, one side per mounting hole, with the mounting hole drilled in the middle of each segment.
-Rand.
That leaves one question: How long should each side of our dodecagon be?
To solve this problem, let's focus on the Isosceles triangle that makes up one piece of our dodecadon pie. What we know are the angles of our Isosceles triangle: 30, 75, and 75 degrees.
Now let's assume your cone is 6" in diameter. To cover it all maybe your ring will need to be a tad bit larger in diameter. Let's say 6.25". So, the two sides of our Isosceles triangle will be half the diameter, or 3.125". So, what we need to solve for is the length of the base of our triangle.
Having forgotten most the geometry and trig I had back in high school nearly 50 years ago, I had to look up how to make this calculation on the Internet. Here is a fairly simple way that uses the sin() function.
How to Calculate the Base of an Isosceles Triangle
1.) Multiply one of the base angles by two and subtract this product from 180 degrees to calculate the angle opposite the base if its measurement is not already given. (We've been given this information, so can skip this step.)
2.) Divide the angle opposite the base by two and find the sine of the result with a scientific calculator.
OK, so 30 degrees / 2 = 15 degrees.
And the sin(15) = 0.2588
3.) Multiply the result of step 2 by two times the length of one of the other sides to get the length of the base of the isosceles triangle.
OK, so: 2 * 3.125" = 6.25"
And: 0.2588 * 6.25" = 1.6175"
So, each side of your dodecagon needs to be about 1.62" wide on the outside edge.
I guess we could test this out by cutting 12 pieces of paper to these dimensions then tape them together to see if they fit the resonator cone properly. This would save trying to cut wood only to find we are just a wee bit off.
-Rand.
Or you can just draw the thing in the diameter you need and measure the parts.
Started by Timothy Hunter in Building Secrets, Tips, Advice, Discussion. Last reply by Southern Ray yesterday. 1 Reply 2 Likes
Started by Timothy Hunter in Other stuff - off topic, fun stuff, whatever. Last reply by Timothy Hunter Mar 21. 11 Replies 2 Likes
Started by Taffy Evans in Building Secrets, Tips, Advice, Discussion. Last reply by Southern Ray Mar 10. 1 Reply 3 Likes
Started by Cigar Box Nation in Feature Articles. Last reply by BrianQ. Mar 9. 4 Replies 3 Likes
Started by Ghostbuttons in Building Secrets, Tips, Advice, Discussion. Last reply by Timothy Hunter Mar 9. 5 Replies 1 Like
Started by Justin Stanchfield in Building Secrets, Tips, Advice, Discussion. Last reply by Taffy Evans Mar 8. 6 Replies 0 Likes
Started by Ken I in Building Secrets, Tips, Advice, Discussion. Last reply by Brian partington Mar 8. 8 Replies 0 Likes
Started by Southern Ray in Cool gear discussion - that's not cigar box related. Last reply by Southern Ray Mar 6. 5 Replies 0 Likes
Started by Taffy Evans in Other stuff - off topic, fun stuff, whatever. Last reply by Taffy Evans Mar 5. 4 Replies 2 Likes
Started by Nomad Jack in Performances, How to Play, Lessons, Concerts. Last reply by Southern Ray Mar 2. 6 Replies 1 Like
Started by Justin Stanchfield in Building Secrets, Tips, Advice, Discussion. Last reply by Carl Floyd Mar 1. 15 Replies 0 Likes
Started by Joe in Performances, How to Play, Lessons, Concerts. Last reply by Carl Floyd Feb 29. 13 Replies 0 Likes
Started by Chance in Building Secrets, Tips, Advice, Discussion. Last reply by Southern Ray Feb 22. 12 Replies 1 Like
Started by Cigar Box Nation in Feature Articles. Last reply by Southern Ray Feb 21. 2 Replies 4 Likes
Started by Brad in Cool gear discussion - that's not cigar box related. Last reply by Southern Ray Feb 19. 6 Replies 3 Likes
Started by Jacob Shook in Building Secrets, Tips, Advice, Discussion. Last reply by Southern Ray Feb 16. 10 Replies 0 Likes
Started by Southern Ray in Performances, How to Play, Lessons, Concerts. Last reply by Southern Ray Feb 16. 2 Replies 0 Likes
Started by Skeesix in Performances, How to Play, Lessons, Concerts. Last reply by Skeesix Feb 6. 2 Replies 1 Like
Started by Timothy Hunter in Other stuff - off topic, fun stuff, whatever. Last reply by Steve M Jan 31. 9 Replies 0 Likes
Started by Mi Rankin in Building Secrets, Tips, Advice, Discussion. Last reply by Justin Stanchfield Jan 27. 5 Replies 0 Likes
Posted by Vlad on March 6, 2024 at 2:32am 5 Comments 2 Likes
Posted by billy jones bluez on February 28, 2024 at 2:09pm 0 Comments 0 Likes
Posted by billy jones bluez on February 17, 2024 at 11:00pm 0 Comments 0 Likes
Posted by Vlad on February 11, 2024 at 1:06am 1 Comment 1 Like
Posted by billy jones bluez on February 8, 2024 at 4:05pm 0 Comments 0 Likes
May 11, 2024 from 11am to 8pm – Speakeasy Grill
0 Comments 0 Likes© 2024 Created by Ben "C. B. Gitty" Baker. Powered by
Cigar Box Nation is presented by C. B. Gitty Crafter Supply, your one-stop-shop for Cigar Box Guitar parts and accessories!