The paint injector 300 comprises a segment of material such as a single strand of wire 302 (e.g., steel music wire, stainless steel, spring metal, nickel/titanium alloy, and/or other metals and alloys or of such materials as kevlar, graphite, nylon or other materials that are flexible and have a substantially high tensile strength), a wire hoop or loop as made from an endless cable or formed by ph