die back
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- This topic has 55 replies, 17 voices, and was last updated 14 years, 1 month ago by Rodney.
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- November 8, 2010 at 5:30 am #25048
It’s pretty easy to tell when it is ready for clear,it looks and feels dry,and it has a nice matt appearence waiting 15 mins @70f minimum before clear.With solvent it dries from the outside in,water dries from the inside out,when it is dry it’s dry.If for some reason you clear to soon it will blush.If you have ever used it you would understand it is a non issue,lots of BS concerning waterborne and how bad it is,usually from people who have never used it and from guys who don’t like change.As far as your beliefs that TDS are bullshit…..You do custom big dollar paint jobs,but I bet they are garaged and well taken care off and don’t spend anytime out in the elements.Put one of those jobs outside for a few years up here in Canada where our temps can range from -40F to + 100F and lets see how long it takes for something to happen.
November 8, 2010 at 5:55 am #25053sure sounds like solvent to me if its dry enuff ta tac then its dry to clear:teach :teach but what do i know im still usin solvent:wak :wak :wak
November 8, 2010 at 5:56 am #25054[quote=”bondomerchant” post=15239][quote=”lild” post=15237]i was told with water you wait 15 mins. also. i have gotten on it too fast. the only thing that happen was die back.[/quote]
really wheres the water go then??[/quote]it’s the same when you get a drop of water in the clear, it evaporates. that’s what happens when you add heat. duh.:wakNovember 8, 2010 at 5:58 am #25055[quote=”Jayson M” post=15240]It’s pretty easy to tell when it is ready for clear,it looks and feels dry,and it has a nice matt appearence.If for some reason you clear to soon it will blush.If you have ever used it you would understand it is a non issue,lots of BS concerning waterborne and how bad it is,usually from people who have never used it and from guys who don’t like change.As far as your beliefs that TDS are bullshit…..You do custom big dollar paint jobs,but I bet they are garaged and well taken care off and don’t spend anytime out in the elements.Put one of those jobs outside for a few years up here in Canada where our temps can range from -40F to + 100F and lets see how long it takes for something to happen.[/quote]at first i had problems trying to make it work too fast. but your right, now i know it’s ready when it has the nice smooth flat look. it’s a pretty thing. solvent never looks that good.
i do know with solvent, after the recoat window, you can lightly scuff and put dbc500 over it and be fine.November 8, 2010 at 6:02 am #25057[quote=”lild” post=15245][quote=”bondomerchant” post=15239][quote=”lild” post=15237]i was told with water you wait 15 mins. also. i have gotten on it too fast. the only thing that happen was die back.[/quote]
really wheres the water go then??[/quote]it’s the same when you get a drop of water in the clear, it evaporates. that’s what happens when you add heat. duh.:wak[/quote
why ya gettin drops of water in ur clear??November 8, 2010 at 6:09 am #25058If you clear Dupont Cromax too early the metallics move and the color just looks really strange. Won’t do it till the next day. The job has to be redone at that point. You know when it’s dry though. Once water is dry, it’s dry.
I know on some recoat windows if you go past them it will delam. I have seen Sherwin Williams do it. Shop I worked at another painter put flames on another guys truck. It sat uncleared for maybe a week to a week and a half. It delamed while they were buffing it. Some basecoats it doesn’t matter. I know Spies and Standox have an unlimited recoat. I think they wanted you to throw on a coat of colorless base maybe, cant remember it’s been awhile since I went to there school.
November 8, 2010 at 9:04 am #25061[quote=”bondomerchant” post=15248][quote=”lild” post=15245][quote=”bondomerchant” post=15239][quote=”lild” post=15237]i was told with water you wait 15 mins. also. i have gotten on it too fast. the only thing that happen was die back.[/quote]
really wheres the water go then??[/quote]it’s the same when you get a drop of water in the clear, it evaporates. that’s what happens when you add heat. duh.:wak[/quote
why ya gettin drops of water in ur clear??[/quote]some of us work a little harder than others, and have to sweat our :cens off to make a livin.:whistle: :dnc
but i don’t know nothin about either one. i just need to change my filter trap.:kofeeNovember 8, 2010 at 7:26 pm #25062I have heard that on shermin before also but that is the only one and i have never used that system. I have heard many quirky things with shermin. For the most part though base is non crosslinked so even if its weeks old you could take reducer on a rag and it would wipe it off. Solvent in your clear bite in just fine. I have many jobs that i have done on daily driven vehicles and never once had clear delam. I occasionally get a bike that the customer will wreck and the weak point is always the base to primer or sealer.
November 8, 2010 at 7:47 pm #25064I know with the BASF system, and i’d think they’d all be the same, if you trap water it will delaminate quickly….usually when the pressure washer hits it for the cleanup. Solvent will do the same thing but it takes longer, the solvent tries to evaporate but cant go anywhere and over time it can create a barrier between the base and clear causing it to seperate. If you think back you’d probably find that over the years most colors you see delaminate are your transparent ones….reds,yellows..etc.
November 9, 2010 at 8:46 am #25078Data sheet says that you can clear after 15 minutes, but that you need to wait a minimum of 20 min to denib.
I appreciate that it is ‘best’ to apply the base as close to practical after the clearing window has opened up, but it also says that you can apply more basecoat or clear within 12 hours, so I don’t see that waiting 45 min is an issue. Never had a delam problem in 7 years.
Cheers,
SimeYup, think i love the dc92. sprays awesome! Not a run or sag one and I painted three cars today. I can see where it can get loose on a guy though. Also junked the dbc500, and now using glasurit 55b-500 color blender. No probs on the blend area as well….So happy!:rock
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