Soft copper wire : 20 gauge ( wire diameter 0.8mm ) : 3cm ( 1,2 inch) for each link beads : 4mm ( abacus crystal ) ...

Soft copper wire - 22 gauge (wire diameter 0.6mm): 2 pieces of 6cm (2.5 inch) for each link, 1.5cm (0.6 inch) for basic link ...

Within each content area, there are one or more tutorials. Each tutorial consists of lessons. Each lesson should be a page detailing the concept being taught, along with sample code. Lesson and page ...