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Robo-one (30cm bipeds), tiny maze runners and hulking industrial robots, it's all cool! Here's my robot and here's the [[page]] on RepRap's wiki where you can make one too!
Re: Let's implement colour mixing - [video] - 12 years ago
@ugen I was searching last night online and found micro magnetic spring clutches that are 1.17" in diameter and an 1.13" in height. They can handle 25 in/lbs of maximum torque and speeds up to 3000 rpm. They operate on either 6, 12, 24, or 90 vdc depending on choice of coil and can be ordered with bearings and gears already attached. I have not called to get pricing or weight information yet, anby MrMaint - General
Re: Let's implement colour mixing - [video] - 12 years ago
@crispy1 I agree that 6 motors on one extruder head would be way too much weight. That is why I was thinking of a multi-color extruder that only used one motor. @everyone Another thought... Since there really is limited problems with dripping and stringing anymore because of the improvements in control of temperature, movement of material, orifice sizing, and speed of printing, why don't we thby MrMaint - General
Re: Let's implement colour mixing - [video] - 12 years ago
Trying to control six extruders plus the usual 3 steppers for movement means managing 9 stepper motors simultaneously. Will that be a problem? Are the processor's fast enough to handle that without reducing the print speed significantyly? Having six extruders will be very space consuming as well. I was thinking that if a light weight stainless steel head was designed using the "BerryBot" "wormgeaby MrMaint - General
Re: Let's implement colour mixing - [video] - 12 years ago
In following your discussion it ocurred to me that if you know how much extrudent must be used before the color will change, then it requires no dumping if the color change is made at the appropriate time and for the proper duration before switching to the next needed color. This could be entered as information for the material. Some color changes may happen with less time than others (ie:light tby MrMaint - General
Large RepStrap - 13 years ago
I am currently in the process of building a 2 foot by 2 foot by 1 foot machine. Here are some things to think about in your design, and some of the solutions I have found in my quest for answers. First: Accuracy of movement must be better than the thickness of the application stream or it will not adhere to what was put down in the last layer. If you are applying a .5 mm extrusion, your movemeby MrMaint - Washington, Seattle RepRap User Group
Re: RepRap Robo-One Working Party 
- 14 years ago
Hi Sebastian, I have always had an interest in robotics. I am currently working on getting all the parts to build a RepRap printer. I have been looking at all the designs, and want to build one that is easily made bigger so it can make bigger things. I have started the process of drawing up all the parts that it will take to make my design. I will make the first set out of aluminum in my shop. Iby MrMaint - Robots!