If it’s not Baroque…

We recently set out on the task of copying a unique style of mouthpiece. This particular piece is for use on a baroque trumpet. When copying and producing a custom mouthpiece, we create a digital image of the rim and interior profile. We save that image as a file that our machines can read and work from. This process is called digitizing. Once a mouthpiece is digitized, that file can be used to make any number of copies.


The exterior is somewhat of a different story. Typically we use one of our blanks, a raw brass mouthpiece with its interior profile yet to be defined. But with this particular mouthpiece, there’s so much character in the exterior that we had to copy that as well! It may have required a little extra work, but the end result came out exactly how we wanted.


The price of duplicating the exterior on a custom mouthpiece varies on a case-by-case basis. So if you have a unique looking mouthpiece you want copied, including the exterior, bring it by the shop or email us some pictures and we would be happy to give you our assessment.


Measuring Rims

Measuring Rims
Here’s a Lawson B23G705 rim. Its inner diameter is either .705″ or .683″, depending on where you measure it.

We’re often asked to compare the diameters of rims from different makers. Whether a rim measures 17.5 or 18 mm depends on where it’s measured. There’s no “right place” to measure a rim and unless the maker tells you where a rim has been measured it’s impossible to compare.

The Lawson rim shown above was measured at a point .025″ down from its high point (crown). That’s where the “705” number comes from. We think that’s a less-than-ideal place to take a measurement because it’s in the middle of the curve.

Osmun mouthpieces are measured .050″ down from the crown because at that point the rim blends into the cup. So, in our measuring system the diameter would be .683″.  That’s .022″ (.56mm) different.

Other makers may use different measuring points and unless they tell you where they’re measuring, it’s impossible to compare.  So, take rim measurements with a large grain of salt.