A method of manufacturing a brush which includes a bristle carrier made from a thermoplastic material and having a front side and a rear side and at least one anchoring opening into which at least one bristle made from a thermoplastic material and having a thickened fastening end is inserted and anchored therein in an anchorless manner, so that it projects from the front side of the bristle carrier, the at least one anchoring opening being defined by an inner surface and having, on the front side, a face-side rim surrounding the anchoring opening, characterized by the following steps: a) providing the bristle carrier which, in the region of the face-side rim, has a transition edge to the inner surface which is beveled at least in sections over the circumference of the transition edge, the anchoring opening and the transition edge being produced during injection molding of the bristle carrier; b) receiving the at least one bristle in the receiving opening of a tool part; c) inserting the at least one bristle by its thickened fastening end into the anchoring opening in the bristle carrier while it is still seated in the receiving opening, the anchoring opening being formed during manufacture of the bristle carrier; d) reducing the distance of the tool part from the bristle carrier so that the tool part contacts the bristle carrier; e) bringing the front side of the bristle carrier to a temperature which is below the melting temperature of the bristle material and/or the bristle carrier material, in particular is at most 85% in °C of the respective melting temperature of the bristle material and/or the bristle carrier material; f) exerting, by the tool part, a compression force on the heated bristle carrier to deform the bristle carrier at least in the region of the face-side rim surrounding the anchoring opening, while reducing the cross-section of the anchoring opening such that the at least one bristle is embedded and anchored in the anchoring opening, wherein, in the process, material of the bristle carrier in the region of the rim and the inner surface is pressed laterally into the anchoring opening and into the area of the transition edge and presses against the at least one bristle; and g) increasing the distance of the tool part from the bristle carrier, so that the at least one bristle is pulled out of the receiving opening. a) providing the bristle carrier which, in the region of the face-side rim, has a transition edge to the inner surface which is beveled at least in sections over the circumference of the transition edge, the anchoring opening and the transition edge being produced during injection molding of the bristle carrier; b) receiving the at least one bristle in the receiving opening of a tool part; c) inserting the at least one bristle by its thickened fastening end into the anchoring opening in the bristle carrier while it is still seated in the receiving opening, the anchoring opening being formed during manufacture of the bristle carrier; d) reducing the distance of the tool part from the bristle carrier so that the tool part contacts the bristle carrier; e) bringing the front side of the bristle carrier to a temperature which is below the melting temperature of the bristle material and/or the bristle carrier material, in particular is at most 85% in °C of the respective melting temperature of the bristle material and/or the bristle carrier material; f) exerting, by the tool part, a compression force on the heated bristle carrier to deform the bristle carrier at least in the region of the face-side rim surrounding the anchoring opening, while reducing the cross-section of the anchoring opening such that the at least one bristle is embedded and anchored in the anchoring opening, wherein, in the process, material of the bristle carrier in the region of the rim and the inner surface is pressed laterally into the anchoring opening and into the area of the transition edge and presses against the at least one bristle; and g) increasing the distance of the tool part from the bristle carrier, so that the at least one bristle is pulled out of the receiving opening.