Armoire chauffée pour filaments prêts à l'emploi

cults3d

The PLA being sensitive to humidity, it is necessary to store it in good temperature and humidity conditions. There are many hermetically sealed systems but when you have a lot of spools, it becomes quickly difficult to manage. I used an old kitchen cabinet to store the filaments, maintained at 30°C. By making rotating supports for the spools and adapting passages on top of the cabinet, the filaments are always available to be extruded. In my cabinet, there are three levels of spools with six spools per level, which could potentially have 18 spools in constant readiness to use, but I only equipped two rows... The spools are modeled into two parts to avoid using supports during printing. The bearings are small bearings with a diameter of 10 x 15 bought very cheaply from China. The spools equipped with bearings are threaded onto steel tubes of 10mm placed on fixed supports attached to the walls of the cabinet. The spools are just placed on the bearings, which allows them to be removed or put individually very easily. The threads pass through holes in "plugs" drilled into the top of the cabinet. Small pieces of PTFE tubing allow the threads to slide without rubbing against the edges of the holes. The cabinet is heated by a bathroom heater with a thermostat. I added an hygrometer and a homemade desiccant made from a bottle of water and rice... To avoid having the spools come out of their supports during extrusion and jam, it's necessary to unwind the thread towards the bottom between the two bearings and pass the thread under the bearing before taking it out of the cabinet. Before being charged into the extruders, the threads pass through a small square of foam to clean them.