I'm in brass lab, now! And have been for about 4 weeks... We have been kept very busy with lots of projects to do. Polishing burnishers, another lathe project, buffing and dent practice to name just a few. So far I'm loving it! My crafty side is thriving on all the cosmetic work we get to do. One of the first things we did was to rehab a mouthpiece. Each of us was handed one at random, either trumpet or trombone, to whip back into shape. Here's how mine turned out, step by step.
|Here's the mouthpiece in it's original state! Check out the dented shank, and big ole' cornflake of crud on the inside!|
|Plenty of tarnish, too. We had the option to scrub it out with a vineagar and soap solution, or to chem clean it. With the scale and crud, I chose chem flush, finishing with silver dip.|
|Post chem room: much better!|
|To bring the dented shank back to round, I tapped the end on a tapered drift punch, since the arbors we had weren't quite the right size or taper.|
|Removing the wobble, striking on the small dent ball-holder I made on the lathe.|
Besides not fitting the arbors, turns out the mouthpiece was also too big to fit in my bench motor, so I went to the mini lathe to spin-polish.
Since my mouthpiece had some dings and scratches in the rim, I burnished it while spinning it on the lathe. Unfortunately, due to improper bracing and the slippery nature of spin-burnishing, I had a minor boo-boo. Or, as a my bench partner put it, "punched the lathe."
|Of course, this picture was taken without the lathe on. Safety first! See the band-aid? It pays to be careful when pushing with heavy force against the rim. Lesson learned, set up right and respect your tools! Accidents happen.|
|Ta-da! The finished product! Trued-up, shiny, clean, and smooth.|
Check in again soon for more!