Heated Solvency

Have Your Parts Been Resurfaced Without Your Knowledge?

North Shore Components performs in-house heated solvency tests to check for the resurfacing of components. The acetone test may or may not reveal a coating applied after sanding to restore surface smoothness and conceal striations. This coating may also be of the thermal or UV-cured epoxy type, which is not soluble in acetone.

The PEMs’ components, which pass the acetone test, are tested by scraping the component surface with a new, sharp blade to detect if a coating has been applied to the body of the component to inhibit the acetone test. The scraping shall be vigorous and with pressure to assure access to the body when coated.

What Are You Looking For

The scraping is meant to determine if a resurfacing material has been applied to the component. Any peeling or flaking of the material indicates that the coatings not soluble in acetone have been applied for remarking. Acetone resistant coatings on the 3 samples shall be tested in series with those heated per the manufacturer’s directions in this order:

• n-methyl-pyrrollidone (NMP)

• Dynasolve 750 or equivalent