This is a Dust show for the Rigid R2401 trim router. This is the router that my CNC machine uses. The dust shoe has a hole for a standard shop vac hose for dust collection duties. This dust shoe uses a 30mm bolt and nut to secure the shoe to the router. I think it is a m4 bolt and nut. This shoe can be printed on a 12x12 cm print bed, it was designed so that my thingomatic can print it. I would suggest ABS be use and not PLA, I may do another shoe that incorporates magnets to secure the shoe to the router.