Masking device and method for manufacturing a masking means for partially masking a component

The invention relates to a masking means (12) for partially covering a component to be machined by a surface finishing process (11) of a turbomachine, wherein the masking means (12) comprises a body in an assembly position of the masking device (12) by plastic deformation on a surface to be covered area of the component (11) (11) can be disposed and frictionally on the component can be fixed, at least one cross-sectional profile of the body is formed such that the body forms at least in the assembly position, at least a spoiler (14) by means of which (a predetermined surface area of ​​the component 11 ) relative to a (in a predetermined Beaufschlagungswinkel β) (the component 11) directed jet and / or coating medium (22) is shaded. The invention further relates to a method for manufacturing a masking device (12) and a processing system (10) comprising a masking means (12).