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This is not a long winding repetitious all-talk video. This is a complete no-nonsense actual demonstration tutorial on how to replace a pickup's ceramic bar magnet with neodymium disc magnets. Neodymium magnets are very powerful and only one thin disc is needed for each pole piece. The magnets used in this video are 5mm in diameter with 1mm thickness. Thicker magnets can be used for more magnetic power but stacking thin magnets can achieve the same power. Stacking thin magnets also has the advantage of giving greater flexibility in adjusting magnetic strength.
It is important to closely match the diameter of the magnet to the diameter of the pole pieces. Using a 6mm diameter magnet on a 5mm diameter pole piece would not be efficient. Likewise, using a 5mm diameter magnet on a 6mm diameter pole piece would also be inefficient.
View simulations of the possible magnetic flux density field of the different configurations of pole pieces with neodymium disc magnets, here:
• Magnetic Field Simulat...