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Originally Posted by TRAXX
I was wondering whats the best way to do candy colors and clear coat.I have only done single colors with clear coat over the part.The clear works really good, but somtimes the clear does not want to stick, its like the first coat is rejecting it.I have tried to heat the part,then shoot the clear but it's to hard to tell how much you have on the part.My ground is good and I shoot the clear at 25KV.Turning the KV up just make it worse.On cany colors do you shoot the base and bake it all the way,or do you half bake it the shoot the candy on the part hot or cold. THANKS
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In my experience, I would start off with a fair amount of lighting so you can actually see it flowing on the part.
Shooting candies and clears, what I always do is bake the base coat at half the time required for the full cure cycle, say if it calls for 400* for 10 minutes, I compensate my oven to bake the part at 400* for 5 minutes. Once the part reaches about 385*, I start the 5 minute timer. Then I pull it out of the oven, depending on the thickness of the part, I will shoot it with the IR thermometer and let temps cool to about 185* and then shoot the candy or clear. You will see it instantly melting onto the part. Then when it is fully covered, stick it back in the oven for a full cure cycle of the last powder applied, whether it be the candy or the clear. If it says 400* for 10 minutes for full cure, then thats what I put it on so that you cure the bottom coat as well as the top coat. Just for good measure I always cure my candies about one minute more at 400* because I have experienced a cracking look on the finish after a while and that was underbaked.
What you experience is the Faraday Effect. Its like sticking 2 magnets together but they push apart from each other. Usually clears and candies will do it if you shoot the part cool. Plus your KV settings on your gun could be too high too. When getting into recessed areas or tight spots, I turn the KV's to the lowest setting and let it blow into the area. That is where you will have the most Faraday Effect at.
Hope this helps..