Leblanc "Paperclip" Contrabass Clarinet Triple Register Key Mechanism in OnShape

Understanding the Triple Register Key Mechanism on a Leblanc "Paperclip" BBb Contrabass Clarinet. I show my CBC and CAC Paperclips and use OnShape Computer Aided Design (CAD) to analyze the complex register mechanism. 0:00 Introduction 0:51 My Mouthpiece and Reed 2:25 Adjustments made for sharp low notes 3:30 Playing Demonstration 4:23 Three register key modes 6:36 CBC and CAC shown side-by-side 10:50 CBC upper and lower sections parted 12:12 Upper section up close. Register key modes again. 14:10 "Wiggle A" that will be illustrated later in CAD 15:39 Bb opening conditions 16:37 Leblanc Parts List and Diagram 18:00 Intro to OnShape CAD 24:04 Main Assembly 27:28 Ab key movement 29:20 A key movement 31:10 Configuration Table for Conditional Mates 32:11 Named Positions Table 32:48 Configuration Table vs Named Positions Table 34:06 Bb Fingering 34:24 Register Up and Low Fingerings 36:20 Register Animation 39:20 Wiggle A with Thumb Down Animation 42:40 Regulation and Cross Section 44:16 Wiggle A with Thumb & RH3 Both Down Animation 47:11 RH3 small lever action regulation and added screw adjustment