WASP launches a new clay extruder for ceramic materials, LDM (liquid deposit modeling) that can interrupt and restart the extrusion flow and can be adapted to most of the 3D printers on the market. WASP took two years to create the extruder and experimented all possible combinations of pressure, nozzles and materials.
WASP has always been focused on the use of functional materials like ceramics, porcelain, clay, alumine, zirconium and advanced ceramics in order to promote digital handicraft and self-production. By launching this new product it aims to promote the print of fluid-dense materials and advanced ceramics.
The new WASP clay extruder can reach a level of precision close to that of plastic polymers extruders. With the combination of a screw extruder and a pressure extruder, it is possible to control with accuracy the flow of material and also to use retraction to interrupt deposition.
Inside the chamber, the material is funnelled toward a screw which pushes it out producing a pressure of 40 bar without damaging the system. This technology allows the air to outflow upward, eliminating the probability of bubbles inside the mixture. As in common pressure extruder, if there were bubbles the flow would be interrupted and the print would be damaged.
In addition, because of the screw, the density of the printing materials is higher, which allows to reduce the time for their change of state, from liquid to solid, thus eliminating the risk of collapse of the printed object.
The set was created to be installed on WASP printers, but can be adapted to most of the existing machines. It is very easy to install WASP LDM extruder on other machines. Initially, it is necessary to print the supporting cover (the source files are provided by WASP) and then, the extruder must be linked to the wire and the “number of steps per millimeter” must be set to 400.