The invention starts with a method to determine a blank form of an elastic component, in particular a non-articulated wiper arm (10), with the default of a target form, which the elastic component is supposed to assume under the effect of at least a predefined initial force (F.sub.1). It is proposed that a counter force (F.sub.G) that at least essentially opposes the predefined initial force (F.sub.1) is applied to a working model (12) of the elastic component, whose model blank form is at least similar to the target form.