May I know why only option 2 need to dry 2-3days for top coat?
Why do we need so many layers of top coat before we put on the chrome? Won't the 1st sand/compound work be smooth enough?
- sorry, being lazy.... basically any top coat if one needs to wet sand n compound, is always advisable to let the paint fully cure n dry.
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Why for Gunze Metallic we need to wet sand the metallic, won't it remove the shine? Or applies if it's not good in order to reapply the top paint?
- basically, our air is dirty. Hence there's almost impossible to create a 100% perfect spray layer condition. That's the reason why sanding n compounding is almost necessary. Even for real car paint spraying.
The wet sand n compound part is a very delicate process. need to remove any tiny dust trapped by the paint. But one cannot compound or sand too much. Once over do it, the shine will lost.
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Why are top coats not required for finishing? Won't it get scratched easily without top coat?
- Yes, it will be scratched easily. Unfortunately for metalizer paint or chrome powder, even aclad chrome or super metallic chrome paint; the particale of the paint is either weak or unstable.
for metalizer, the paint molecule is unstable, so when u rub/buff onto them, the paint molecule rearrange themselves and result in a chrome like finishing visually.
Even for Aclad chrome or SM chrome, the molecule tends to "float" on top of the bottom paint; means it's not as stable as paint that "grabs" on to the surface. As a result of this unstable condition, it presents a chrome like visual.
Of course there r people coat or spray transparent paint on top of aclad chrome or SM (super metallic) Chrome. However to me it defeats the purpose of using these paint. Because once u apply anything on top, although u ll still get a metallic silver effect, basically u will lose the mirror like chrome effect, which is the main purpose of using the expensive Aclad Chrome.
So for kits that r done with chrome finish, spray the kit seperately, adjust the inner frame more or less to the final pose u want, then only assemble. After assembly, only do minor adjustment to the pose. Definitely no more touching or playing with it after that.
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Also is there any tips to use air gun to prevent "fur" like paint particles? It depends on gun quality, or paint mixture?
- "fur"? u means something like spider web? mainly due to mixture ratio