Stork CM3 vs Warburton 3M
The Warburton 3M has a wider cup diameter.
Mouthpiece A
Stork CM3
Silver plate · Trumpet
ClassicalCup diameter16.30 mm / 0.6417 in
Cup depthMedium
Rim width6.75 mm / 0.2657 in
Throat diameter3.66 mm / 0.1441 in
Backbore—
FinishSilver plate
Material—
Best suited for
All-round versatile — balanced cup for general playing
vs
Mouthpiece B
Warburton 3M
Silver plate · Trumpet
All-roundCup diameter16.50 mm / 0.6496 in
Cup depthMedium
Rim width6.60 mm / 0.2598 in
Throat diameter3.66 mm / 0.1441 in
Backbore—
FinishSilver plate
Material—
Best suited for
All-round versatile — balanced cup for general playing
Cup Diameter
The Warburton 3M has a cup diameter of 16.50 mm / 0.6496 in compared to 16.30 mm / 0.6417 in on the Stork CM3 — a difference of 0.20 mm / 0.0079 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
Throat diameters are essentially identical at 3.66 mm / 0.1441 in, so resistance feel will be comparable.
Finish
Both the Stork CM3 and Warburton 3M are listed with the same finish (Silver plate).
Which is better?
The Stork CM3 is designed for classical playing, while the Warburton 3M targets all-round use. Your best choice depends on your musical context.