marvin20 Posted June 29, 2009 Share Posted June 29, 2009 Good day! I have a problem with an Academy 1/48th T-33 that I'm building. I had primed it, waited 2 days before applying the first coat of the Alclad II Aluminum, waited 2 more days then I masked it off using Tamiya tape and newspaper. I then sprayed a few of the panels with Alclad II Aircraft Aluminum paint. I got some dust particles in the paint. I waited a couple of days for it to dry, before I wet sanded it smooth. It didn't remove the primer, the sanding just removed the imperfections in the paint. I waited a couple more days, then I re-masked it, and repeated the process of spraying it with the Aluminum, waiting 2 days, then masking and spraying it with the Aircraft Aluminum. As I pulled the tape off, a large section of the paint came with it. I mean all the way down to the bare plastic, paint and primer were on the tape! I tried to sand and feather the affected area, waited a couple of days, re-primed the area, waited, then re-sprayed it last night, but it has a very noticeable demarcation line. I will tray and spray another coat of Alclad tonight to see if that will help, if not, I will have to strip it off and start over. That's were I'm having troubles, how do I strip the Alcald (lacquer based) without attacking the plastic? I thought of using lacquer thinner, but that will eat the plastic, any ideas or helpful hints will be greatly appreciated. Thanks, QT Quote Link to post Share on other sites
72linerlover Posted June 29, 2009 Share Posted June 29, 2009 Hi marvin20, it seems that all problems begin from the plastic if the primer comes off. There is no chemical way to remove Alclad without damaging plastic; you may try to use a collateral effect of the tape: Stick a strong tape on and remove quickly, it had to strip away Alclad and primer. Degrease the bare plastic before priming and start over. In addition Alclad requires an enamel base over the primer. Take a look here: Good luck Euge Quote Link to post Share on other sites
terryt Posted June 29, 2009 Share Posted June 29, 2009 (edited) You can remove paint with Alcohol, brake fluid or Super Clean. Just soak in any of the fluids. Alcohol will take some elbow grease with a cloth soaked in it. You have to scrub the part with the cloth or tooth brush. You can get Super Clean at Walmart in the automotive section, here's a picture. http://www.superclean.com/index.php Be careful of Super Clean as it is caustic just like oven cleaner. Ues rubber gloves when applying. Edited June 29, 2009 by terryt Quote Link to post Share on other sites
MarkW Posted June 29, 2009 Share Posted June 29, 2009 I routinely use denatured alcohol, which is perfectly safe on plastic, to remove lacquers including Alclad. It may remove underlying putty as well, but absolutely will not damage styrene. Quote Link to post Share on other sites
leverancier Posted June 29, 2009 Share Posted June 29, 2009 Next time, don't leave the masking tape on for so long. You really don't have to wait days to let the allclad cure. After 10 minutes you can do whatever you want with it. Quote Link to post Share on other sites
marvin20 Posted June 29, 2009 Author Share Posted June 29, 2009 Next time, don't leave the masking tape on for so long. You really don't have to wait days to let the allclad cure. After 10 minutes you can do whatever you want with it. I'm sorry if my post gave you that impression, regarding the tape. I pulled the tape off immediately after painting, so I wouln't have that happened. But alas, it did even after only bing on the model for about ten minutes. Quote Link to post Share on other sites
MarkW Posted June 29, 2009 Share Posted June 29, 2009 What primer did you use? Seems that was the culprit. Quote Link to post Share on other sites
marvin20 Posted June 29, 2009 Author Share Posted June 29, 2009 What primer did you use? Seems that was the culprit. I used the Alclad black primer. Which you would think wouldn't cause any issues when spraying thier brand of paint. Quote Link to post Share on other sites
metroman Posted June 29, 2009 Share Posted June 29, 2009 (edited) Yes, except that the Alclad 2 black primer has been found over the past years to cause far more problems than it's worth, I'm not a wiz at the search feature but I'm sure some archive digging will shed some more light on the ills this stuff has wrought. Strongly suggest that you use MM gloss black enamel for your base coat, or the Tamiya TS-16 spray can black - I believe both of those have been shown to be problem free and deliver great results with the high shine Alclad tones. Best of luck, I've been in your boat before and it sucks. Brian W Edited June 29, 2009 by metroman Quote Link to post Share on other sites
Old Blind Dog Posted June 30, 2009 Share Posted June 30, 2009 I was doing an experiment recently; tried to mask off an Alclad II-painted area with The Detailer Liquid Mask. Sprayed over the mask with some Tamiya White Primer. When I tried to remove the mask, the Alclad came right off. Sheesh! Old Blind Dog Quote Link to post Share on other sites
MarkW Posted June 30, 2009 Share Posted June 30, 2009 I'm really struggling with when liquid masks actually will NOT cause more problems! Any decent low tack painters tape should be fine on Alclad. Quote Link to post Share on other sites
marvin20 Posted June 30, 2009 Author Share Posted June 30, 2009 I'm really struggling with when liquid masks actually will NOT cause more problems! Any decent low tack painters tape should be fine on Alclad. Isn't the Tamiya tape that's sold in the LHS and online in the same category as the low-tack painter's tape? I've seen photos of in progress builds where the modeler is using the blue painters tape. Is this what you would recommend? QT Quote Link to post Share on other sites
MarkW Posted June 30, 2009 Share Posted June 30, 2009 Yes. Tamiya tape is convenient due to size, but that blue painter's tape is basically the same thing. Quote Link to post Share on other sites
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