Oral-b grinder

Oral-B Brush Head Adapter – 3D PrintableIt transforms a used Oral-B electric toothbrush head into a compact mini grinder.After removing the bristles from an old Oral-B brush head, simply slide this adapter onto the head.Once attached, the spinning motion of the toothbrush turns it into a small sanding tool, perfect for smoothing and finishing flat surfaces.Ideal for hobbyists, model makers, and anyone who wants to give new life to worn toothbrush heads instead of throwing them away.