Method for separating excess glass in the production of hollow glass products, comprising: - centring a hollow glass product in a receiving device, which is designed to hold the hollow glass and to rotate same about a rotational axis in such a manner that a separation line, along which the excess glass is to be separated from the hollow glass product to be produced, is centred in relation to the rotational axis; - processing the hollow glass product in a plurality of positions along the separation line by means of a laser beam in order to generate local filaments with a weakened glass structure during a rotation of the hollow glass product about the rotational axis; and - introducing energy along the separation line in order to separate the excess glass along the weakened glass structure, wherein the centring of the hollow glass product comprises a basic centring which comprises: - placing the hollow glass product on a support surface or displaceably receiving the hollow glass product by means of the receiving device; - displacing the hollow glass product on the support surface or relative to the receiving device in order to centre the hollow glass product at the height of the separation line relative to the rotational axis; and then - receiving the hollow glass product by means of the receiving device or locking the hollow glass product relative to the receiving device, wherein the centring of the hollow glass product comprises a fine centring of the hollow glass product held by a holding apparatus (18; 20) of the receiving device in such a manner that the fine centring comprises: - determining a decentring of the hollow glass product held by the receiving device by means of a centring measurement apparatus; and - displacing the holding apparatus (18; 20) of the receiving device relative to the rotational axis in order to at least partially compensate for the determined decentring. - centring a hollow glass product in a receiving device, which is designed to hold the hollow glass and to rotate same about a rotational axis in such a manner that a separation line, along which the excess glass is to be separated from the hollow glass product to be produced, is centred in relation to the rotational axis; - processing the hollow glass product in a plurality of positions along the separation line by means of a laser beam in order to generate local filaments with a weakened glass structure during a rotation of the hollow glass product about the rotational axis; and - introducing energy along the separation line in order to separate the excess glass along the weakened glass structure, wherein the centring of the hollow glass product comprises a basic centring which comprises: - placing the hollow glass product on a support surface or displaceably receiving the hollow glass product by means of the receiving device; - displacing the hollow glass product on the support surface or relative to the receiving device in order to centre the hollow glass product at the height of the separation line relative to the rotational axis; and then - receiving the hollow glass product by means of the receiving device or locking the hollow glass product relative to the receiving device, wherein the centring of the hollow glass product comprises a fine centring of the hollow glass product held by a holding apparatus (18; 20) of the receiving device in such a manner that the fine centring comprises: - determining a decentring of the hollow glass product held by the receiving device by means of a centring measurement apparatus; and - displacing the holding apparatus (18; 20) of the receiving device relative to the rotational axis in order to at least partially compensate for the determined decentring. wherein the centring of the hollow glass product comprises a basic centring which comprises: - placing the hollow glass product on a support surface or displaceably receiving the hollow glass product by means of the receiving device; - displacing the hollow glass product on the support surface or relative to the receiving device in order to centre the hollow glass product at the height of the separation line relative to the rotational axis; and then - receiving the hollow glass product by means of the receiving device or locking the hollow glass product relative to the receiving device, - placing the hollow glass product on a support surface or displaceably receiving the hollow glass product by means of the receiving device; - displacing the hollow glass product on the support surface or relative to the receiving device in order to centre the hollow glass product at the height of the separation line relative to the rotational axis; and then - receiving the hollow glass product by means of the receiving device or locking the hollow glass product relative to the receiving device, wherein the centring of the hollow glass product comprises a fine centring of the hollow glass product held by a holding apparatus (18; 20) of the receiving device in such a manner that the fine centring comprises: - determining a decentring of the hollow glass product held by the receiving device by means of a centring measurement apparatus; and - displacing the holding apparatus (18; 20) of the receiving device relative to the rotational axis in order to at least partially compensate for the determined decentring. - determining a decentring of the hollow glass product held by the receiving device by means of a centring measurement apparatus; and - displacing the holding apparatus (18; 20) of the receiving device relative to the rotational axis in order to at least partially compensate for the determined decentring.