PetarB Posted August 27, 2012 Share Posted August 27, 2012 About 5 years ago I finished a project with Alclad II Chrome - a wonderful metal finish which looked fantastic. This was applied over the recommended Tamiya black spray (TS-14?). Recently I've inspected the project and am not thrilled to see a myriad of tiny cracks through which the black is showing through. I'm wondering what could have caused this, and whether anyone else has some experience with this. I have used the Alclad lacquers a lot and have plenty of builds that use them. Factors that MAY have affected this: Resin kit. resin outgassing? I occassionally seal my Alclad finished with something else. I may have sealed lacquer gloss coat. Or Future? I don't remember. I'm thinking this might have been the issue... Sun exposure, not much but there is some Undercoat with Tamiya fine grey or white primer Not sure which of these might have caused the issue. I'm hoping it's not a problem with Alclad II Chrome itself. Interested to hear anyone else's experiences. Quote Link to post Share on other sites
Fly-n-hi Posted August 27, 2012 Share Posted August 27, 2012 TS-14 isn't the gloss black recommended by Alclad II. Quote Link to post Share on other sites
-Neu- Posted August 27, 2012 Share Posted August 27, 2012 What sort of temperature was the model exposed to in the past month or two? Resin might expand a bit more than styrene, which might be the source of the cracks. Quote Link to post Share on other sites
phasephantomphixer Posted August 27, 2012 Share Posted August 27, 2012 My 1/25 Truck (shot Chrome @ 2003) and Terminator skeleton (shot @ 2001) still look Super as the day they were done. I stuck to bottle inst. of Gloss Black Enamel. Testors in fact. Quote Link to post Share on other sites
dragonfly Posted August 27, 2012 Share Posted August 27, 2012 I wouldn't expose my model to sun light. Sounds like heat expansion to me. Quote Link to post Share on other sites
PetarB Posted August 27, 2012 Author Share Posted August 27, 2012 TS-14 isn't the gloss black recommended by Alclad II. I'm fairly sure this was the recommended undercoat when I did this. I know there is now a black undercoat available from Alclad. I wouldn't expose my model to sun light. Sounds like heat expansion to me. This is a possiblity. I'm hoping it's the culprit, at least! Quote Link to post Share on other sites
kap64 Posted August 28, 2012 Share Posted August 28, 2012 I used the chrome over Alclad black on a resin model a few years back and it still looks the same. Mine does not get any sunlight. Quote Link to post Share on other sites
datguy Posted August 28, 2012 Share Posted August 28, 2012 About 5 years ago I finished a project with Alclad II Chrome - a wonderful metal finish which looked fantastic. This was applied over the recommended Tamiya black spray (TS-14?). Recently I've inspected the project and am not thrilled to see a myriad of tiny cracks through which the black is showing through. I'm wondering what could have caused this, and whether anyone else has some experience with this. I have used the Alclad lacquers a lot and have plenty of builds that use them. Factors that MAY have affected this: Resin kit. resin outgassing? I occassionally seal my Alclad finished with something else. I may have sealed lacquer gloss coat. Or Future? I don't remember. I'm thinking this might have been the issue... Sun exposure, not much but there is some Undercoat with Tamiya fine grey or white primer Not sure which of these might have caused the issue. I'm hoping it's not a problem with Alclad II Chrome itself. Interested to hear anyone else's experiences. I have had one Alclad Duraluminum finish develop cracks as you describe. I have not been able to trace the source of the problem. Since it was not Chrome, I did not use the black undercoat. The finish was on plain styrene, with no resin. I'm suspicious of differential heat expansion of the paint vs. plastic under incandescent lights. DG Quote Link to post Share on other sites
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