On Friday I spent all day doing dent work on my project trumpet.  It is actually shaped like a trumpet now!  Today I continued on the dent work and I lacquered my mouth pipe project.  We also learned about replacing mouth pipes today even thought we don't have to do this.

A BIT ABOUT MOUTH PIPE REPLACEMENT

It is important when you take the mouthpiece receiver and the upper outer main tuning slide tube off that you keep them in good condition because you will reuse them.  Solder must be completely scraped out of these parts before you try to fit them to the new mouth pipe.  You can use the old mouth pipe for measurements so it is good to keep that around too.  If you replace an old mouth pipe with a universal one, you should use a tube cutter & cut it to the size of the original mouth pipe.  You must use dent balls to make the parts fit tightly.  You can also use brass shimming to fill in big gaps between parts.  Everything must be exactly straight before you solder.