Handmade campana - Photos of my campana

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Postby congalou » Tue Jan 22, 2008 1:25 pm

Hello,

Here is some photo of my old enormous handmade campana.

Never need microphone even in a Big band with 50 musicians !!!! :angry:

Galou.
www.myspace.com/congalou


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Postby congalou » Tue Jan 22, 2008 1:29 pm

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Postby CongaTick » Tue Jan 22, 2008 1:38 pm

Lou,
That's a big hunk of steel!
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Postby congalou » Tue Jan 22, 2008 1:58 pm

Almost !!! I used a 2mm thick metal sheet.... I maybe could try baseball bat to play with !!!

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Postby Chupacabra » Wed Jan 30, 2008 4:11 am

I thought I heard that baby last night! Were you playing it?
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Postby congalou » Wed Jan 30, 2008 12:11 pm

Yeah !!!

Near Paris, I had an audition for a new band but they don't want to hire me.... don't understand....
:p


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Postby Diceman » Wed Jan 30, 2008 12:52 pm

Congalou,

C'est un grand campana, mon brave!

I am glad you use a baseball bat and not a cigar and I am sure the band were looking for Le Bossu de Notre Dame ???

I admire the fact that you are into making your own instruments- I wish I had a workshop.

Suave
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Postby Congadelica » Wed Jan 30, 2008 1:14 pm

Ding Dong :p
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Postby maelopr » Wed Jan 30, 2008 4:57 pm

-Nice campana! I can imagine you have one bicep at least 3 inches bigger than the other.... :D
¡ ECUA JEY !
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Postby maelopr » Wed Jan 30, 2008 4:58 pm

-Nice campana! I can imagine you have one bicep at least 3 inches bigger than the other.... :D
¡ ECUA JEY !
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Postby congalou » Sat Feb 02, 2008 1:18 pm

Yeah !!

I will maybe try bobybuilding if I have to make concerts with this !!!

GL.
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Postby Chupacabra » Sun Feb 03, 2008 4:43 am

Congalou, did you anneal or normalize the campana after you welded it? If so, how long did you heat it for and what colour?



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Postby congalou » Sun Feb 03, 2008 4:11 pm

Hello Chupacabra,

What do "anneal" mean ? I don't find translation.

So, after welding, I have sand the campana, let it rust a little and use a metal varnish.

But after playing a lot, the stick broke the varnish as you can see on the photos, I'd better let it rust more for fixed well the varnish (and use better varnish too).

I don't heat the metal and the varnish is clear, varnish with rust give this color.
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Postby Chupacabra » Sun Feb 03, 2008 6:59 pm

Hi Congalou,
In blacksmithing, to anneal something like steel, the blacksmith would heat the item to the prescribed temperature for a prescribed time. The variables depend on the grade of steel (amount of carbon), the amount, thickness and other factors. To indicate temperature you would use the colour of the steel when you heat it (need experience), or temperature indicating markers (foolproof). Technical specs on the steel are available from the suppliers. When the steel is annealed the grain is refined to the point where all the stresses are relieved, especially where the weld is. It also softens the steel, which wouldn't be desirable for a bell. This is where "normalizing" comes in. This process involves heating the steel to the prescribed temperature again (usually bright, cherry red) and quickly dipping it in brine, or just water and letting it cool in air. This reintroduces some hardness back to the steel and you have (insert technical term here) minimal stresses in the steel, which could affect the sound of the bell. These are just a couple of the basic techniques that the old, village blacksmiths have been practising for centuries!
There is also case-hardening but that's another topic!
If I had a shop to experiment in, this would be one of the first things I would try. It's costly, though. The price of acetylene is through the roof!
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Postby congalou » Mon Feb 04, 2008 10:29 am

Thanks Chupacabra, It's very interesting !

You're right, It's could be great for the sound to softens the steel.

My campana is too thick (2mm) and too solid... It sound very heavy but not very musical !!!... :p

That's my first, I will do better for the others :;): and This technique could be great.

And about the finish, maybe it could be great to quickly dipping in old engine oil, to protect against the rust and make a nice finish...

But do you think that Bell producers like LP or Meinl use this technique because, it could be very expensive I think. You're right, acetylene is very expensive !!!

Maybe they use just good metal, welding, maybe tuning for have a good note, chrome and that's OK... don't know....

G.
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