The task of designing efficient and easy-to-learn sequencing for manua
l installation of electrical components on a printed circuit board is
studied at a computer monitor manufacturer. Advantageous sequences can
be characterized by several nonstrict rules: use both hands equally i
n the insertion, proceed from top to bottom and from the edges to the
center, take the closest next part, and so on. Three different orderin
g methods are discussed: line sweeping, traveling salesman clustering,
and weighted 3-matching. Line sweeping gives a very different layout
from those of traveling salesman clustering and weighted 3-matching.