The invention provides a method for connecting a connecting element, in particular a dowel (1), with a workpiece (2), which comprises the steps of providing the workpiece, providing the connecting element, which has a molded body, preferably of biopolymer, and an outer section (FIG. 1a) for contacting the side walls (2a) of the workpiece, supplying energy at least partially into the outer portion of the connecting element and at least partially softening the outer portion of the connecting element by the energy supply and hardening of the outer portion of the connecting element in at least in sections contact with the side walls of the cavity of the workpiece includes.
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