We propose a method for filling a n-sided hole, 5 ≤ n ≤ 8, that interpolates n connected boundary curves of a given net of patches. This method allows the joining with patches defined in many different ways. A new class of blowing up pole-functions is introduced in order to build a G 2 -continuous n-sided filling surface. This filling surface is in one piece, image of [0, 1] 2 .