* Bolder designs are recommended in order to prevent any unsatisfactory coloring caused by lines and figures that are too thin or too small.
* General enamel coloring requires a surrounding metal space to ensure good quality painting results. herefore it is usually necessary to allow for a blank metal rim (0.3mm minimum).
* The standard colors are based on the Pantone Chart.
For budget considerations, iron material can be used instead of copper, but without polishing.