A vanity project, using ring magnets to assemble trefoil knot.This is a tedious project using 48 small ring magnets (neodymium, 3/8" x 1/8" x .060"), epoxy, and various materials to aid in production, including binder clips, C-clamps, thin parchment paper (for baking), cotton swabs, fender washers (7/8"), and a diamond file. . Pair the magnets as shown and use a diamond file to score the surface that contacts the epoxy; otherwise the epoxy may not adhere to the smooth surface of the magnets. The magnet should be clean and dry. . The (trimmed) cotton swab is used to apply a small dollop of epoxy in the recessed holes. The "+" and "-" marks are used for reference but are not necessary; they help give the epoxy more contact surface for good adhesion. . The fender washers ensure that the magnets are flush to the mating surface, and the binding clip holds it in position while the epoxy cures. The parchment paper acts as release paper, preventing the epoxy from sticking where it shouldn't. . Using the fender washer/parchment paper/binder clip process, put magnet pairs in only one end of eleven of the twelve pieces. Do not put magnets in the last piece. . Once the epoxy has cured in the eleven pieces, use the magnets to position the magnet pairs of the empty ends of the adjoining pieces, with a piece of parchment paper between them. Pieces of tape will help in remembering the correct positioning. . The C-clamps are used to hold two pieces for assembly and positioning only. Use very little pressure. . Dry fit all parts, plan carefully, and take your time. Make sure the epoxy is fully cured between steps. The magnets are tricky little devils and provide many opportunities for failure. The photos may provide a helpful reference. . Once the project is completed, disassemble it, mix up the pieces, and try to put it back together. The magnetic fields will make it vexing. .