Metals like silver and copper might tarnish over time and require polishing to revive their unique sheen. Stainless steel is comparatively maintenance-free but could require occasional cleansing with a damp material to take away fingerprints or smudges. CNC (Computer Numerical Control) machines are often used for exact cuts and complicated patterns, while laser engraving can provide surface-level details like textual content or logos. Highly skilled artisans might hand-cut the crystal for intricate patterns and designs. Machine-cutting techniques may also be used for precision, usually in combination with laser etching for detailed inside designs. Lucite can be produced in a clear type or tinted to various colours, offering flexibility in aesthetic presentation.