Methods of Marker Planning: Manual vs Computerized

The point of marker planning is to find the most efficient combination of sizes and shades for an order, for the best fabric yield and equipment utilization, and one cutting order may need several markers to get there. A marker is made for a specific style, fabric, and set of sizes, and its length sets the length of the lay to be spread. Markers can be made two ways: by hand or by computer. Here is how each works, and why CAD has largely won.

1. Manually produced markers

Full-size pattern pieces are arranged on marker paper (or directly on the top ply of the spread) and traced with pencil or tailor's chalk. It is time-consuming and space-hungry: pieces are moved and re-moved on real fabric widths until a satisfactory plan emerges. Manual markers are prone to error, grain variation, poor line definition, misplacement, and omitted pieces, and accuracy depends entirely on the skill of the person laying them out.

Because a paper marker is usually needed for cutting (often in multiple copies), the master was historically reproduced by:

Copy method	How it works	Limit
Carbon duplicating	Double-sided/special carbon as the original is drawn	6–8 copies before lines degrade
Spirit (hectograph)	Master drawn over hectograph paper; alcohol-wet copies through rollers	One copy at a time
Diazo photographic	Master + light-sensitive paper under UV, developed with ammonia vapour	One at a time, as needed

These were common in the 1970s and have since been overtaken by computerized plotting, which is far more versatile and better suited to responsive manufacturing.