This foamed white, amorphous or semi-crystalline thermoplastic has medium hardness and low impact resistance. 3D-printed parts made from PS are used to make master models for vacuum, plaster and ceramic shell castings.
Solution
Step 1: First, the 3D model will be broken down into layers of 0.1 mm on the computer and sent to the 3D printer.
Step 2: Before printing, we need to fill the tank with SLS Polystyrene (PS) powders. On a bed pressure, a 0.1 mm thick layer over the whole width is applied.
Step 3: Pre-heat the machine to above 100掳C, and the laser will lit the powder and increases the temperature just above the melting point of the powders.
Step 4: After a layer is formed, the platform will lower down and produce another layer.
Step 5: When the printing process ends, remove the excess powders which also serve as supports.