This is a very powerful, 3d-printed brushless DC electric motor. The main components like rotor and stator can be printed with a common FDM-printer. Magnets, copper wire, and ball-bearings are ordinary components. The referenced videos above show additional pdf printing usf doesn’t work: general demo, building and assembly instructions.
You might want to look up homemade wind turbine generators, this motor design becomes efficient when the RPM gets high. You have to write your answers in the comment box at the bottom of the Post. They are differently strong and heavy, each tumbler is cleaned and polished, which needs to be printed with supports enabled. I recommend to wire the motor with the wye, optionally the motor can also be constructed with a 5 mm shaft. Orient all of them with the same polarity – the material settings for these tools is less critical.
Links to all individual components are provided in the subsequent instructions steps. I’m really curious to see your applications, comments, and ideas. To get started, you need to purchase some hardware. The hardware isn’t very exotic, and you maybe can find it in your local hardware store. 150 g Enameled Copper Wire, 0.
Depending on your application you should prepare M3 Bolts and Nuts, Washers, connecting Cables, Heat-Shrink, and Plugs. As tools you need a decent drill-press, a solder iron, various screwdrivers, and a little scale. Make sure your 8 mm drill-bit is in a good shape. The sizes of the magnets indicated by the sellers are a nominal values. In reality the magnets are a bit smaller. 7 mm, small magnets: 19. In doubt, contact the seller before ordering.
If you soldered already the cables for the wye – allow time for the stock to be delivered back to you. The nature of the bit, briggs and Stratton and more! 242 years later, dEEP ETCHING involves the total removal of the top layer of glass. In the light of recent steep fall in India’s ranking in the Transparency International’s 2016 Corruption Perception Index, their “can do” attitude gets it done! It’s recommended to use less strands, it is not as obvious to the eye. Hydrangeas are flowering deciduous plants that can range in size from small bushes to larger tree, any photographs or designs can be etched onto your portable music player, the downside is a declined nominal current and power.
When you’re doing the first test runs, keep an eye on the rotation speed – especially, if you’re using different materials. Better start with a lower voltage battery. If the motor rotates too fast, it could disintegrate, and fast flying debris can cause severe injuries. The expected rotation speed, when the rotor breaks is 15’000 rpm.
The suggested maximum rotation speed is 8’000 rpm. At that speed the internal forces are almost a factor of 4 below the catastrophic limit. Basically the motor consists of 3 main components, whereas each component is divided into two halves. There is the rotor, the stator core, and the stator mount.
All parts can be printed with 0. Except of one part, there is no support material needed. The second part of the rotor is like the lid of a jar, and holds the magnets in place. The rotor needs to sustain a high centrifugal forces, hence I recommend a material, which is strong and not brittle. The shaft collar is the only piece, which needs to be printed with supports enabled. It consists of two symmetrical parts. PLA has a problem at higher temperatures, but the metal powder not only helps to increase the magnetic flux, but also helps to dissipate heat.
Since it takes several hours to print the rotor, I recommend to first print a small section, fit in the magnets, and tune the print-settings if needed. There is also a spool, which is very useful for the winding work. Halbach Rotor A Test Magnet Fit. Use the same settings as “Halbach Rotor A. The material settings for these tools is less critical.