While trying to recoat over a previously PCed and fully cured 18 ga sheet metal part, I'm having what appears to be "Back Ionization" problems. Ground is good, using the Table top Pro gun set at 70KV, shooting TGIC poly powder, shoot booth clean w/ no stray winds or currents. Tryed to do a light medial blast and same results. Powder shoots on good in one area while others it won't grab or has the Back Ionization stars. Since the gun is only 70 or 100KV, is the kv too high for the recoat or can I do something else. I know I can heat the item up to 400 and shoot it on but that is an idea I'd like not to do.
Thanks!
Thanks!
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