black inner side of the bell?

[alberttrombone]

Hello!

I've seen some trombones with a black inner side of the bell. For ex. the B.A.C. Custom Voyager.

Is this a black lacquer? or there is a way to turn a "regular" bell a black one with other procedures?

It would be for a 3B I have.

Thanks!

[BGuttman]

There is a black lacquer.

There is also a black oxide treatment for copper and copper alloys (which will need some kind of protective coating afterward). I believe Inderminen used the black oxide treatment for their black bells.

If you decide to try a DIY, watch out. Too thick a coating of a lacquer will dull the sound. Uncontrolled black oxide treatment will reduce the metal thickness.

If you decide this is what you really want, get help from a tech and a professional in these kinds of treatments.

[tbonesullivan]

I have seen black lacquered trombones, but I think the BAC trombones have a treatment done to the bell that turns it black. Then they leave the black intact on the inside of the bell, while buffing it off the outside, as far as I can tell. I also have seen trombones they rebuilt that are like that, like this one:

https://www.thebrass-exchange.com/conte ... s-trombone

I'm pretty sure you'd need to completely refinish the bell to have it the way BAC does it.

[alberttrombone]

Thanks Bruce! I'm not gonna try a DIY... jejejeje just wanted to know the different options available.
I think I'd prefer the lacquer option, it seems less harmful for the bell.

[alberttrombone]

I have seen black lacquered trombones, but I think the BAC trombones have a treatment done to the bell that turns it black. Then they leave the black intact on the inside of the bell, while buffing it off the outside, as far as I can tell. I also have seen trombones they rebuilt that are like that, like this one:

https://www.thebrass-exchange.com/conte ... s-trombone

I'm pretty sure you'd need to completely refinish the bell to have it the way BAC does it.

That looks pretty nice jajajaja

[elmsandr]

DIY is easy. Just pay attention to what you’re doing.

https://www.sciencecompany.com/Patina- ... opper.aspx

Cheers,
Andy

[alberttrombone]

DIY is easy. Just pay attention to what you’re doing.

https://www.sciencecompany.com/Patina- ... opper.aspx

Cheers,
Andy

Wow... I'm gonna take a look but it doesn't seem that easy jajaja

[calcbone]

DIY is easy. Just pay attention to what you’re doing.

https://www.sciencecompany.com/Patina- ... opper.aspx

Cheers,
Andy

Hm…would these work on nickel silver? Asking for a “friend…”