Description
100%-to-scale model of an Amati-Kraslice A16 tenor trombone-shank natural trumpet/bugle mouthpiece, intended to be very close to the original design.
The cup profile resembles alto horn mouthpieces, with a tenor trombone shank instead of the trumpet shank often seen on those.
This is in the A91 low-pitch/natural trumpet mouthpiece series, with Amati-Kraslice stating it is for "low E♭ rotary" trumpets, and other E-flat/alto-voice natural trumpets with this shank size. Unusually for their older products, it has UPC 8 591278 023201. Vennture measured the shank opening diameter at 10.841 mm / 0.4268", marginally larger than the 0.4220" VennCAD default for small-shank, tenor trombone mouthpieces.
It's a decent match with the Amati-Kraslice ABG-221 cavalry-style bugle, pitched in F. This bugle is coincidentally the inspiration model for the "Ceremonial Bugle".
The Amati ABG-221 does not have perfect intonation, but the A16 slots relatively solidly for "Taps". However, for a trumpet player, it is rather difficult to clearly articulate fast bugle calls on the ABG-221 with the A16. It also has some intonation issues up higher due to the long shank, compared to the more even intonation of the stock A54 or York Al-Tru 62.
Note that the ABG-221 receiver opening has a diameter measuring 12.07~12.11mm / 0.476~0.477" (shank fit & caliper measurements in photos). The Materialise prints ordered are shown fitted with the ABG-221 for reference.
Al Cass, Chasons, Lausmann, and others have made these sorts of smaller mouthpieces to assist brass musicians crossing over to/from trumpet and trombone. Thus, the A16 might help trumpet players to double on trombone or small-shank euphonium.
If you haven't encountered the "Ceremonial Bugle" before, it is a bugle-shaped metal device, with an electronic speaker insert used to simulate bugle calls, mainly "Taps" at military funerals. When the speaker insert is removed, they can be played normally, but they come with a shallow-cup, ill-fitting mouthpiece. This setup does not sound good, also due to their shoddy construction/prone to leaks, compared to the well-made Amati-Kraslice original version.
No dimensions have been adjusted or modified for printing; the price is intended to defray scanning costs. For print verification, the STL has overall length 86.99 mm / 3.425", and [greatest] outer diameter of 27.98 mm / 1.102".
Note that the shank opening is somewhat thin and fragile with resin prints.
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