Electroless nickel coating on rapid prototyped ABS M30 plastics was successfully developed. Micro hardness studies indicated that the coatings are enhancing the strength of plastics. The corrosion resistance of coated surface was evaluated in sea water medium using electrochemical techniques. The EN surfaces improved the ultimate tensile strength in comparison with ABS M30 plastics. The appearances of spherical particles of Ni-P are visible in FE-SEM images. The results are presented and discussed. © 2014 University of Manchester and the authors.