Preparation
of the substrate:
Any uneven joints should be ground
flat and sandblasted. If sandblasting
is not appropriate , any other rust
removing process is sufficient.
In the case of a concrete
substrate, holes should be filled.
The surface should be sandblasted
or ground flat, dried thoroughly,
and washed with an acid solution if
necessary.
The finished surface
roughness should be within the range
of 50 ~ 100µm |
glass cord
