Leadpipes have a very important role in the creation of the sound of a trumpet. They set up the intonation on the horn, affect the feel and slotting, and also affect the tone. Currently, I have designed 3 different tapers that cover the spectrum in terms of taper length and taper size. From my experiments with these tapers, I will be able to narrow down what characteristics they each produce, and then I will design new tapers to try to improve on the first 3. With the aid of my new CNC lathe, making new leadpipe mandrels will be much faster than it used to be, which will allow me to quickly see the results of my ideas. Needless to say, I am very excited to get my CNC gear setup and tested! Below is a run through of the process I use to make my leadpipes. There are a few different ways to make a leadpipe, and my way is a traditional tube drawing process. Other ways of making a leadpipe are to form it from a flat sheet and braze it together with a seam, or machine a piece of brass rod using custom made drill bits that are extra long, and tapered to the leadpipe specs.
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