ASE Painting and Refinishing (B2) Practice Test 2025 - Free ASE Exam Practice Questions and Study Guide

The effective method for removing mold release residue from plastic parts involves using scouring powder and water. This approach works well because scouring powder typically contains mildly abrasive substances that can help lift and remove the residue without damaging the surface of the plastic. The gentle abrasion combined with water helps to break down the chemical residues left by the mold release agent, ensuring a cleaner surface that can better accept paint or other finishes.

While a heated press can assist with certain manufacturing processes, it is not suitable for cleaning purposes and could potentially damage the plastic. Applying a standard soap solution may not provide the necessary abrasiveness to effectively remove the residue, especially if it has been sitting for an extended period. Similarly, just using a microfiber cloth would not provide the necessary scrubbing action required to eliminate the mold release residue effectively. Each of these methods lacks the combination of effectiveness and safety that scouring powder offers when it comes to cleaning plastic surfaces.