Wait...

There's a mill attachment?

So with the mill attachment it's not just a lathe, it's a mill, as well?

Rick,

Thanks for your generosity.

Someone will surely supply a project quickly.

But...

Why oh why didn't you get a BIG lathe?

Prediction: 45 well informed people will now weigh in on the subtle differences between 12J and 15J valve clusters. 15 votes for "12J valves in a 15J would obviously never work." 15 votes for "15J and 12J valves are exactly the same." 15 votes for "12J valves in a 15J would be a step up/down ...

If the 15J's valve cluster is the same as the 12J's--which I heard somewhere was the previous version, replaced by the 15J--I may be able to help you out. I'm attempting to have a working 12J pieced together from two junker 12J's. Yeah, I know. :) I will wind up with an extra valve cluster. All ...

I've heard whinier whiners.

Sometimes in my own voice.

I have (apparently) a different take on why the professor asked candidates to play trombone music, when he certainly had tuba sheet music right at hand. He was applying a filter, all right. But he wasn't filtering out the candidates who couldn't transpose. He was looking for the candidates who could ...

I just bought a Conn 12J.

I was able to fit it into a ProTec PL251 gig bag.

I was surprised that it fit, but it did. Pretty much exactly.

Nice case. Light, with good protection.

Dillon Music had it for $180 with free shipping.

I hope this helps.