They do made Flute Cutters for the router table ,with a fence like the one below you can cut flutes all day long and they will come out true,you can cut 3 flutes at one time or just one at a time,then just move the spacer up or down and they will come just the way you want them to.
2 wing carbide tipped with 5/16" bore.
Buy as individual cutters or as complete assembly with arbor and bearing.
Cut flutes on the edges of curved pieces.
Stack different cutters to create a stepped flute for a decorative edge or molding, or stack multiple cutters to create miniature fluted moldings for clock cases, small bookcases or cabinets.
The 1/4" arbor has 1" length and the 1/2" arbor has 1-7/16" length for cutters, spacers and bearings.
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