Tube end connector
MTT Technology, USA
Material: 6061
$50 for setup, $5.5/pc, 100pcs

Secondary mirror holder
Sky Rover Optical Ltd., USA
Material: 6061
$150 for setup, $12/pc, 30pcs

Mounting plate for big telescope
Sky Rover Optical Ltd., USA
Material: 6061
$110/pc, no setup fee, qty 3pcs

Frame Connector
Robinson Frame, UK
Material: steel
$100 setup, $4.8/pc, qty 100

Stepper Motor Enclosure
Mytoshino Motor, Japan
Material: 2024
$300 setup fee, $20/set, qty 3,000