Paint Tech Question
Thread Starter
Safety Car
Joined: Jan 2001
Posts: 3,637
Likes: 27
From: Norwalk Ct
Paint Tech Question
I had painted the L88 headlight on my car with a "rattle can" made of my body color then a clear coat (Dupli Color clear about 3 weeks ago). After polishing they look ok, but I think they can be nicer, so I have a question.
I am painting a friends motorcycle tank this weekend (basecaot/clear) I'm using a PPG clear (with reducer/hardner) if i where to sand the covers with 800/1000 would the paint a) react with the rattle can clear already on there and b) would it stick or just come off in sheets when dry?
Any ideas?
Nick
I am painting a friends motorcycle tank this weekend (basecaot/clear) I'm using a PPG clear (with reducer/hardner) if i where to sand the covers with 800/1000 would the paint a) react with the rattle can clear already on there and b) would it stick or just come off in sheets when dry?
Any ideas?
Nick
Racer
Joined: Jan 2005
Posts: 400
Likes: 0
From: Location: at the right hand of Satan in Hell
rattle can paint is almost always laquer - I'd say 100% of the time unless you found some way off the wall brand.
the good news is that PPG makes two base/clear coats - including one that will stick to laquer. They each have different initials that I can't remember. For example: RFJ and RML (these are wrong). Your paint store will be able to answer this in a second for you. If not - email me and I'll call my suppliers and answer you in 5 minutes.
Also, when you buy paint, you can ask for the instruction sheet that goes with it (PPG provides these free). It tells you EVERYTHING: sand paper grit, reducer and hardner mixing ratios, temperature and drying times, time between coats... EVERYTHING - in fine detail. Again - if your guy won't give you this let me make a call for you.
Bryan
the good news is that PPG makes two base/clear coats - including one that will stick to laquer. They each have different initials that I can't remember. For example: RFJ and RML (these are wrong). Your paint store will be able to answer this in a second for you. If not - email me and I'll call my suppliers and answer you in 5 minutes.
Also, when you buy paint, you can ask for the instruction sheet that goes with it (PPG provides these free). It tells you EVERYTHING: sand paper grit, reducer and hardner mixing ratios, temperature and drying times, time between coats... EVERYTHING - in fine detail. Again - if your guy won't give you this let me make a call for you.
Bryan
Racer
Joined: Jan 2005
Posts: 400
Likes: 0
From: Location: at the right hand of Satan in Hell
ps- the reason you aren't happy with your covers is that you used laquer. By definition, its shine does not last long and you have to rub it out frequently. Its the oldest school paint still available. That's why acrylic enamel became popular earlier and then base/clear, and now urethane base/clear - the shine keeps lasting longer.
Le Mans Master
Joined: Apr 2000
Posts: 5,202
Likes: 10
From: cincinnati ohio
St. Jude Donor '09
Originally Posted by bryan27
ps- the reason you aren't happy with your covers is that you used laquer. By definition, its shine does not last long and you have to rub it out frequently. Its the oldest school paint still available. That's why acrylic enamel became popular earlier and then base/clear, and now urethane base/clear - the shine keeps lasting longer.
Team Owner
Joined: Feb 2003
Posts: 30,183
Likes: 313
From: Lake Norman NC
bc/cc clear needs to bond with base in order for it to stick right...if your going to be shooting that clear over your rattle can painted covers..its most likely that it will peal off later on during washing or waxing...in other words..it will never stick right..Nick, your car is too nice, take those covers and get them bc/cc the right way. JMO 
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Melting Slicks
Joined: Jan 2004
Posts: 2,672
Likes: 1
From: New Cumberland PA
Originally Posted by bryan27
sure it will last forever - but is simply requires more work to keep it looking nice
Thread Starter
Safety Car
Joined: Jan 2001
Posts: 3,637
Likes: 27
From: Norwalk Ct
OK...all these responses have prompted another question.
the place that painted my car made me a "rattle can" from the paint they mixed for me (they even gave me what was left over in a gallon can).....my car is painted base coat/clear (ppg). So what type of paint is in the rattle can??
Nick
the place that painted my car made me a "rattle can" from the paint they mixed for me (they even gave me what was left over in a gallon can).....my car is painted base coat/clear (ppg). So what type of paint is in the rattle can??
Nick
Le Mans Master
Joined: Apr 2000
Posts: 5,202
Likes: 10
From: cincinnati ohio
St. Jude Donor '09
Originally Posted by lvrpool32
OK...all these responses have prompted another question.
the place that painted my car made me a "rattle can" from the paint they mixed for me (they even gave me what was left over in a gallon can).....my car is painted base coat/clear (ppg). So what type of paint is in the rattle can??
Nick
the place that painted my car made me a "rattle can" from the paint they mixed for me (they even gave me what was left over in a gallon can).....my car is painted base coat/clear (ppg). So what type of paint is in the rattle can??
Nick
Team Owner
Joined: Feb 2003
Posts: 30,183
Likes: 313
From: Lake Norman NC
Originally Posted by lvrpool32
OK...all these responses have prompted another question.
the place that painted my car made me a "rattle can" from the paint they mixed for me (they even gave me what was left over in a gallon can).....my car is painted base coat/clear (ppg). So what type of paint is in the rattle can??
Nick
the place that painted my car made me a "rattle can" from the paint they mixed for me (they even gave me what was left over in a gallon can).....my car is painted base coat/clear (ppg). So what type of paint is in the rattle can??
Nick
C6 the C5 of tomorrow
Joined: Nov 2000
Posts: 6,665
Likes: 2
From: Twin Cities Minnesota
Originally Posted by Redshark6974
Most likely its a single stage urethane or enamel....I still wouldn't recommend painting PPG clear coat on it. Might want to talk to your painter about it and find out for sure.
Advanced
Joined: May 2005
Posts: 96
Likes: 0
From: I'm in the Paint Booth!
Originally Posted by lvrpool32
OK...all these responses have prompted another question.
the place that painted my car made me a "rattle can" from the paint they mixed for me (they even gave me what was left over in a gallon can).....my car is painted base coat/clear (ppg). So what type of paint is in the rattle can??
Nick
the place that painted my car made me a "rattle can" from the paint they mixed for me (they even gave me what was left over in a gallon can).....my car is painted base coat/clear (ppg). So what type of paint is in the rattle can??
Nick
Last edited by dags; May 9, 2005 at 04:30 PM.
