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Re: Multi Material extruder and one motor+servos - 10 years ago
Ciao, great comments. Got 2 Turnigy TGY S712G servos at 6/7kg torque depending on voltage applied. Need to work on a triangular lever to guide filaments without breaking them and functional to move them enough to shift from one to another. I wanted to share an initial design to have some feedback, have motor mount, 2 shafts with gears, 2 servos. Now need to work on the lever design. Thinkiby biskero - Reprappers
Re: Multi Material extruder and one motor+servos - 10 years ago
Ciao, looks like this idea has been done Here is the company, prices are a bit high ! One issue that I see here is the gear mechanism and the motor direction spin, in any case cool to see that the principle works. Alessandroby biskero - Reprappers
Re: Multi Material extruder and one motor+servos - 10 years ago
Ciao, I am going to use 4 hotends for 4 materials and the software will take care of the motor. Also from the design there are 4 servos, I am planning for 1 motor and 2 servos since a lever can be designed to have 3 state position, for example: 1st servo will engage material 1, idle and engage material 2 2nd servo will engage material 3, idle and engage material 4 There is a company from kicksby biskero - Reprappers
Re: Multi Material extruder and one motor+servos - 10 years ago
Ciao, looks pretty cool! Btw the images are from the person who had the idea, I just linked them since he has done a good job. Also your drawing would be a perfect fit for pellet feed instead of filaments which is something in the back of my mind for sometime. Pellets are much cheaper than filaments since they do not go through the process of creating the filaments! Alessandroby biskero - Reprappers
Re: one stepper +5 filaments = dog box shifting! 
- 10 years ago
Ciao, very good points. Yes cost needs to be considered for sure. Also about the torque, another thing to be considered carefully, would help some levers/mechanism. I lean towards servos since, as you mention, software is already in the firmware to manage the servos. Usually are used for the bed leveling. I am looking both at Marlin and its variation called Kimbra, contacted the developer. I wiby biskero - Developers
Re: one stepper +5 filaments = dog box shifting! - 10 years ago
Ciao, made a comment above! You want me to add my post here? Makes sense to your discussion? For me is the same as discussion leads to different ideas and solutions. Let me know Alessandroby biskero - Developers
Re: I want to add extrusion rods/ Linear Rails to my prusa i3? - 10 years ago
Ciao, check here Alessandroby biskero - Reprappers
Multi Material extruder and one motor+servos - 10 years ago
Ciao, I am working on building a very large printer for a project that I am working on which requires multi materials printing, at the moment 4, which means 4 extruders hotends. I noticed that most of the solutions for the extruders are based on one filament/one motor or 2 filaments/1 motor in some cases but when you want to drive more filaments is one/one filaments/motor. So I was thinking whyby biskero - Reprappers
Re: one stepper +5 filaments = dog box shifting! - 10 years ago
Ciao, new here and working a multi material printer. I am interested in knowing more abut your ideas as I want to use one extruder motor (or the least as possible). Right now I am planning to have 4 materials printer and was looking at the Kimbra marlin firmware variation. Any feedback or suggestions based on what you are working on? Thanks Alessandroby biskero - Developers