Best posts made by falco22

Hello everyone, first of all excuse my English, it is not my native language. I am developing my own tool changer but oriented to a bio 3d printer. Unlike a conventional 3d printer, my idea is to have a single head with an extrusion system (with a leadscrew) that chooses between different heads (syringes), but only the head has the extrusion system. The problem is that in a printing process the machine must grab and release different heads over and over again but as they are passive heads (without independent extrusion motors) I need that when leaving a head in the bay it saves the information of how far the extruder advanced in that head for when it is picked up again, the main head motor knows the starting point. I hope it is understood. Thanks!