Finishing router bits produce a smooth and visually appealing surface finish on the material. They work best when following a roughing cutter.
Compression cutters combine both and up cut and down cut spirals to force chips into the centre of the panel. The inwards pressure prevents chipping on either surface.
Three flute router bits have a smooth cutting action and a greater finish in harder materials. Three flute router bits last longer, run faster feed rates and are less susceptible to breaks than one and two flute router bits.