STEPCRAFT CNC machines have two parameters in the specifications for their machines: Clamping Surface and Travel Distance
Clamping Surface is maximum size of work material that you can place onto the machines bed. Travel Distance is the maximum amount that the gantry and cutting bit will move.
As an example, the STEPCRAFT-2/300 has a clamping surface of 14.96″ x 8.74″ (380x222mm) but the travel distance is equal to 11.81″ x 8.27″ (300x210mm). This means that you can place a slightly larger workpiece onto the bed than you can actually cut.
The number that is most important when choosing which size STEPCRAFT machine to buy is the Travel Distance.
The following chart reflects these sizes as well as the overall dimension of the machines. Clamping Distance is the middle set of dimensions and Travel Distance is the Lower Set of Dimensions.