This discussion's suggestion of using cement nails as raw material for boring bars is very timely.
On a plastic part, I need to enlarge the bore of a 0.875" hole out to 0.985" diameter. Required depth is about 1.5".
But the plastic part has a metal coupling, about 3/8" diameter in the center of the hole, sticking up part way. This prevents normal techniques like milling, drilling or boring with tools at hand to the required depth. I need a tool that will fit in the narrow space between the coupling and the plastic wall.
So I'll grind a cement nail to make a boring bar.
On a plastic part, I need to enlarge the bore of a 0.875" hole out to 0.985" diameter. Required depth is about 1.5".
But the plastic part has a metal coupling, about 3/8" diameter in the center of the hole, sticking up part way. This prevents normal techniques like milling, drilling or boring with tools at hand to the required depth. I need a tool that will fit in the narrow space between the coupling and the plastic wall.
So I'll grind a cement nail to make a boring bar.
