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Step 4Build the Basic Magnetic Coupler
What's a magnetic coupler, anyway? A magnetic coupler enables the transmission of mechanical energy through a magnetic field interaction. It happens every time you push one magnet with another with like poles. This Magnetic Coupler is almost magical.
The Magnet Coupler was covered in a previous Instructable, and it's simple to build. Glue two sets of two CD's together with crazy glue,( or preferably methylene chloride, the solvent for polycarbonate CD's.) Keep each set aligned when gluing.
You can order the BEST neodymium super-magnets from K&J Magnetics here.
After the glue is set, take one of the two-disc sets and drop it over a Spindle Post onto a previously-made magnetic disc pack. The magnets underneath will help align the 1/2 inch magnets that are to be glued to the CD disc, and the spindle post should keep discs aligned. If you don't have a magnetic disc pack to act as a magnetic template, then just mark off 6 equal segments on the disc and line up the magnets to these marks. Small irregularities will be tolerated in this low-rpm (up to 1500 rpm) water-pressure version of the CD Turbine. On air pressure it's a different story entirely- things must be very well balanced in that case.
Scuff up the 1/2 inch magnets with sandpaper so they will stick better, then apply a drop of crazy glue to each one and place on the two-disc set. A total of 6 magnets will be glued on. They should self-align as the glue sets. When the glue is dry, scuff the 6 magnets, put a drop of crazy glue on each and glue on the top discs. Goop may be added to coat the magnets and surrounding disc surface for harsh environments and as a shock buffer.
Congrats...you should now have a cool Magnetic Coupler!
A movie of the Basic Kitchen version of the CD Turbine and Coupler
IF THIS VIDEO DOES NOT PLAY PLEASE CLICK HERE
The Magnet Coupler was covered in a previous Instructable, and it's simple to build. Glue two sets of two CD's together with crazy glue,( or preferably methylene chloride, the solvent for polycarbonate CD's.) Keep each set aligned when gluing.
You can order the BEST neodymium super-magnets from K&J Magnetics here.
After the glue is set, take one of the two-disc sets and drop it over a Spindle Post onto a previously-made magnetic disc pack. The magnets underneath will help align the 1/2 inch magnets that are to be glued to the CD disc, and the spindle post should keep discs aligned. If you don't have a magnetic disc pack to act as a magnetic template, then just mark off 6 equal segments on the disc and line up the magnets to these marks. Small irregularities will be tolerated in this low-rpm (up to 1500 rpm) water-pressure version of the CD Turbine. On air pressure it's a different story entirely- things must be very well balanced in that case.
Scuff up the 1/2 inch magnets with sandpaper so they will stick better, then apply a drop of crazy glue to each one and place on the two-disc set. A total of 6 magnets will be glued on. They should self-align as the glue sets. When the glue is dry, scuff the 6 magnets, put a drop of crazy glue on each and glue on the top discs. Goop may be added to coat the magnets and surrounding disc surface for harsh environments and as a shock buffer.
Congrats...you should now have a cool Magnetic Coupler!
A movie of the Basic Kitchen version of the CD Turbine and Coupler
IF THIS VIDEO DOES NOT PLAY PLEASE CLICK HERE
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