Rotational Moulder/Castor

thingiverse

This is a compact Rotational Moulder/Castor I've developed. As part of Design and Technology my students learn how to draw and develop their own designs. This project has given me the chance to open their minds to the possibilities of 3D printing, as well as providing a great platform to teach other plastic manufacturing techniques. I haven't had a chance to cast anything yet. But it does work well. I've added counter weights to allow it to rotate smoothly. Hardware Shopping List BOLTS M3x18 x7 M4x20 x1 M4x50 x1 M4x65 x1 M6x35 x1 M6x50 x1 M6x155 x1 (threaded rod) NUTS M3 half hex x 7 M4 Lock x6 M6 Hex x4 M6 Lock x2 Bearings ID-4/OD13 x7 (ebay) ID-6/OD15 x4 (ebay) ALUMINUM EXTRUSION 12x12x1.4 U channel -4@230mm (mitered corners) -4@280mm (mitered corners) 19.05x19.05x1.2 RHS -4@100mm -2@200mm -1@300mm -1@25mm MISC 62x Smallest sheet metal screws i could find RC Bevel Gears (ebay) 12V DC Reversible Gearhead Motors - 36RPM (Jaycar) http://www.jaycar.com.au/Electromechanical-Components/Mechatronics/Motors-%26-Gearboxes/12V-DC-Reversible-Gearhead-Motors---36RPM/p/YG2734 Rotational moulder/castor Objectives This design would be used as a teaching resource for year 11 and 12 students (16-18 years) in Design and Technology. These students can use this design as a base to develop their own version of a moulder or create their own mould to cast original designs. It can also be used as a demonstration tool for junior students. Audience Generally senior students with high skill levels who would be targeted for extension. Preparation When the students have reached their senior years, they have already spent years developing and refining their skills in Sketchup. We currently have 1 3D print systems printer which they have had access to previously. Students will also draw on metal skills they have already learned such as taping and working with aluminum. Steps Aluminum sections can be cut with a standard compound timber saw. All components are self-aligning and can be used as a guide to drill required holes through aluminum. Super glue can be used to join the support frame. Results This will be used as an extension project for most students. It will also give students another avenue for prototyping for major projects.