A directional drilling mechanism is disclosed. The fibrous web includes a microencapsulated material, such as a microencapsulated phase change material, adhered to the web. The body has a track zone and a harness portion which is formed with a selected geometric shape to define the moving path of the compression element that includes a start position, a first stage compression position, a compressed position and a second stage compression position in this order. In this manner, the colorant layer serves to mask the stain which would otherwise be caused by substances permeating through the substrate. In at least one embodiment of the method, a collimator sheet extending in a first direction and made of an X-ray absorbing material is used as a support, onto which webs made of an X-ray absorbing material are formed in layers by way of a rapid prototyping technique and protrude transversely in respect of the support in a second direction.