A laser cutting system for cutting articles, the laser cutting system being configured to cut a plurality of slots, holes, and/or pores into each article, the system comprising: a delivery system for delivering a laser beam, the delivery system comprising a laser source configured to provide a laser beam, at least one mirror (M1, M2), a focusing objective lens, a gas source, and a delivery nozzle; the delivery nozzle configured to deliver gas from the gas source and the laser beam from the laser source towards the article to cut the plurality of slots, holes, and/or pores therein in a predetermined pattern along the article, the article being configured to extend in a longitudinal direction along a longitudinal axis in a horizontal direction underneath the delivery nozzle; a first stage for holding each article to be cut by the laser beam and being configured to (a) rotate the article axially about the longitudinal axis during delivery of the gas and laser beam towards the article and also (b) move the article longitudinally in the longitudinal direction along the longitudinal axis relative to the delivery nozzle as the laser beam is delivered to the article in order to cut the plurality of slots, holes, and/or pores into the article; a second stage for moving the delivery nozzle relative to the article being held by the first stage, the second stage being configured for movement perpendicularly in a vertical direction relative to the longitudinal direction of the article; a controller for controlling actuation of the laser beam and the gas source, and movement of the first stage and the second stage, a vacuum source for providing a vacuum seal and vacuum to an inside of the article and for withdrawing slag cut from the article through the inside thereof during cutting by the laser beam, and a vacuum box connected to the vacuum source on an infeed side of the system for removing slag from a cutting zone, wherein the vacuum box is a vacuum sealed device that includes a vacuum sealed chamber and an adapter between an exit of the vacuum sealed chamber and a rotary stage of the first stage, the adapter being configured to maintain a vacuum seal between the vacuum sealed chamber and the article as the article is moved and rotated during cutting, the adapter being configured to move through the vacuum sealed chamber along with the article, wherein the article is a tube, the laser cutting system being configured to cut a plurality of slots, holes, and/or pores into and through a wall of each tube to form a filtration tube that is configured to filter solids from fluids. a delivery system for delivering a laser beam, the delivery system comprising a laser source configured to provide a laser beam, at least one mirror (M1, M2), a focusing objective lens, a gas source, and a delivery nozzle; the delivery nozzle configured to deliver gas from the gas source and the laser beam from the laser source towards the article to cut the plurality of slots, holes, and/or pores therein in a predetermined pattern along the article, the article being configured to extend in a longitudinal direction along a longitudinal axis in a horizontal direction underneath the delivery nozzle; a first stage for holding each article to be cut by the laser beam and being configured to (a) rotate the article axially about the longitudinal axis during delivery of the gas and laser beam towards the article and also (b) move the article longitudinally in the longitudinal direction along the longitudinal axis relative to the delivery nozzle as the laser beam is delivered to the article in order to cut the plurality of slots, holes, and/or pores into the article; a second stage for moving the delivery nozzle relative to the article being held by the first stage, the second stage being configured for movement perpendicularly in a vertical direction relative to the longitudinal direction of the article; a controller for controlling actuation of the laser beam and the gas source, and movement of the first stage and the second stage, a vacuum source for providing a vacuum seal and vacuum to an inside of the article and for withdrawing slag cut from the article through the inside thereof during cutting by the laser beam, and a vacuum box connected to the vacuum source on an infeed side of the system for removing slag from a cutting zone, wherein the vacuum box is a vacuum sealed device that includes a vacuum sealed chamber and an adapter between an exit of the vacuum sealed chamber and a rotary stage of the first stage, the adapter being configured to maintain a vacuum seal between the vacuum sealed chamber and the article as the article is moved and rotated during cutting, the adapter being configured to move through the vacuum sealed chamber along with the article, wherein the article is a tube, the laser cutting system being configured to cut a plurality of slots, holes, and/or pores into and through a wall of each tube to form a filtration tube that is configured to filter solids from fluids.