Steaming before boiling

A few nice aluminium cnc China machining images I found:

Steaming before boiling

Image by courtney johnston
Anodizing parts for the TC18 VFD Tube Clock www.vonnieda.org/tc18

Steaming before boiling

Image by courtney johnston
Anodizing parts for the TC18 VFD Tube Clock www.vonnieda.org/tc18

Good Anodizing

Image by courtney johnston
Anodizing parts for the TC18 VFD Tube Clock www.vonnieda.org/tc18