A system for forming wax particles, the system comprising: an conduit with a lumen having a first dimension and having an inlet and an outlet; an extruder having an inlet and an extruder orifice as an outlet located within the conduit, the extruder orifice having a second dimension that is smaller than the first dimension; a carrier fluid reservoir fluidly coupled with the conduit inlet; an extruder reservoir fluidly coupled with the extruder inlet; a particle collector comprising a chamber filled with a carrier fluid and including a particle inlet fluidly coupling the chamber with the conduit outlet, a heater and a cooler being coupled to the particle collector to control the temperature or temperature gradient within the chamber; wherein the particle collector has a collector inlet that is arranged to reach a first temperature and a collector outlet that is arranged to reach a second temperature that is lower than the first temperature with a temperature gradient between the first temperature and second temperature, wherein the particle collector includes a particle selector, to select particles for being provided to the waste chamber via a waste outlet or to a product chamber via a product outlet, the particle selector comprising a rotating member that rotates a rotatable arm so that rotation in one direction causes the particles to flow to the waste outlet and rotation in the other direction causes the particles to flow to the product outlet; a control system having a computer processor adapted to control the system; and a particle analyzer operatively coupled with the particle collector, wherein the particle analyzer uses optics to determine the size of the wax particles for selection or exclusion. an conduit with a lumen having a first dimension and having an inlet and an outlet; an extruder having an inlet and an extruder orifice as an outlet located within the conduit, the extruder orifice having a second dimension that is smaller than the first dimension; a carrier fluid reservoir fluidly coupled with the conduit inlet; an extruder reservoir fluidly coupled with the extruder inlet; a particle collector comprising a chamber filled with a carrier fluid and including a particle inlet fluidly coupling the chamber with the conduit outlet, a heater and a cooler being coupled to the particle collector to control the temperature or temperature gradient within the chamber; wherein the particle collector has a collector inlet that is arranged to reach a first temperature and a collector outlet that is arranged to reach a second temperature that is lower than the first temperature with a temperature gradient between the first temperature and second temperature, wherein the particle collector includes a particle selector, to select particles for being provided to the waste chamber via a waste outlet or to a product chamber via a product outlet, the particle selector comprising a rotating member that rotates a rotatable arm so that rotation in one direction causes the particles to flow to the waste outlet and rotation in the other direction causes the particles to flow to the product outlet; a control system having a computer processor adapted to control the system; and a particle analyzer operatively coupled with the particle collector, wherein the particle analyzer uses optics to determine the size of the wax particles for selection or exclusion.