Polymer Fabricated Masks
The manual fabrication of plastic masks is labour intensive
and extremely skilful. A number of polymer pieces are cut
and bent to shape. They are then put together by means of
a plastic welding process.
This method is typically used to produce prototypes or when
a very low number of masks are required. The production of
manually fabricated polymer masks is of great assistance in
the development of long-term injection moulding projects.
Preliminary coating trials and pre-production sampling may
be carried out with the use of these masks. These are particularly
helpful to determine the orientation of masks in planets as
well as number of masks to be fitted per planet (for aluminising)
or frame (for spray painting).