A holeless knuckle duster. Inspired by the NickNuk Pow! and Elder Futhark's Hammerhead knucks.

I went through several iterations for a good feel. It's still small compared to full dusters and may slip in the hand. Thickness of 10mm-15mm felt best. The finger notches are oval, not completely round, to provide room for the fingers.

Made in Sketchup. The final version was rounded with fredo6's RoundCorner plugin. Printed on a CEL RBX01 in ABS at 40% infill. Choose a ductile material like ABS, PETG, or PLA+.