Needle Box for sewing machine

Sewing machine needle storage boxCapacity 18 boxes of needles:Dimension - metric:2x 45mm x 4,5mm, height 45mm2x 45mm x 6mm, height 45mm7x 30,5mm x 6.2mm, height 45mm7x 30mm x 4mm, height 45mmand 1x Space for Sponge (for temporary storage of needles) 13mm x 17mm, height 25mmDimensions - converted to inches:• 2x 1.77" x 0.18", height 1.77"• 2x 1.77" x 0.24", height 1.77"• 7x 1.20" x 0.24", height 1.77"• 7x 1.18" x 0.16", height 1.77"• 1x space for sponge (for temporary needle storage): 0.51" x 0.67", height 0.98"The box is designed to use magnets (Ø 4mm, height 2mm)To add them, you need to schedule a pause:For the bottom of the box: 136 layerFor the top of the box: 120 layer!VERY IMPORTANT!:Before embedding the magnets, decide which side of each magnet will be the north pole and which will be the south pole. The goal is to create an alternating pattern that guarantees attraction when two parts come together.