Primers
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so i have a couple questions about primers, does everyone stick to the primers in their paint company or do some buy different brand primers? and if so what is/are good primers that have a nice build but also dont shrink? and prices.
Also what are come of the causes of shrinking.
Thanks
Shrinking is operator error unless you use a real talc heavy primer that is junk.
to steal a line from Red Baron “Primer cannot shrink into a scratch that is not there” finish off each substrate in the proper grits and you will be fine.
I’m using ppg ehp waterbased ,and we use the omni primer. It is good for our shop dry fast and build up good, only thing is hard to sand. Price is good ,it’s around 120$ a kit and also u can brush the primer on if u just fixing a small area and don’t want too much overspray.check it out on ppg official website . Hope it help
Exactly Ryan
[quote=”ryan999″ post=28500]Shrinking is operator error unless you use a real talc heavy primer that is junk.
to steal a line from Red Baron “Primer cannot shrink into a scratch that is not there” finish off each substrate in the proper grits and you will be fine.[/quote]
that is what i thought. i read the data sheets on most of the products i use, and finish with the highest grit allowed, most of the time if not just a couple under but still in the products range. i was just wondering if some other factors caused this as some fillers and primers say on their description “shrink resistant or minimal shrinkage”
Never heard lol
[quote=”wjieling” post=28501]I’m using ppg ehp waterbased ,and we use the omni primer. It is good for our shop dry fast and build up good, only thing is hard to sand. Price is good ,it’s around 120$ a kit and also u can brush the primer on if u just fixing a small area and don’t want too much overspray.check it out on ppg official website . Hope it help[/quote]
yeah it does, i use the ppg shopline for basically everything from the primer to clear, the 202 primer is nice and doesnt seem to hard to sand but this is the only primer ive used so far, so thats why im wondering whats out there and peoples opinion. but ive never seen brushed on primer
the biggest place i see it is the paint surrounding the filler work. If the filler is blocked in P180 and the scratches get out into the surrounding paint, you have to remove them and finish in P240-P320. You can’t prime over P180 grit in paint. Every substrate has a different level of hardness, thats why you can finish metal in P120. It doesn’t dig in as deep.
Also no filler over paint, shake primers after mixing if possible, let flash well between coats, don’t overload it on and don’t hog on the first coat over the featheredged paint just in case it is sensitive.
Can’t remember the number on the label but omni has one primer can brush on good for small job
[quote=”wjieling” post=28508]Can’t remember the number on the label but omni has one primer can brush on good for small job[/quote]
O ok, I’ve seen a couple that say they are rollable, but in my mind everything in auto body was sprayed on lol :silly: I’ll have to try that sometime I guess, I just graduated high school last June, and I’m trying to be self employed and learn as I go, and going back to school this semester or next for Autobody .
Let your primer dry well. I try to plan my days so at the end I prime and it dries overnight. Painting over primer not fully cured will suck up every time . I use a generic 2k economical primer. Under 100 dollars a kit 4:1
O ok, I’ve seen a couple that say they are rollable, but in my mind everything in auto body was sprayed on lol :silly: I’ll have to try that sometime I guess, I just graduated high school last June, and I’m trying to be self employed and learn as I go, and going back to school this semester or next for Autobody .[/quote]
good job! Keep going :cheers
I tried one time to roll on primer. I used a small roller, everywhere the roller left a line of thick primer at the edge of the roller, after I sanded it flat for what seemed like forever and painted, you could still see where the lines were. Needless to say , I don’t roll primer anymore. Bill
[quote=”billgaino” post=28518]Let your primer dry well. I try to plan my days so at the end I prime and it dries overnight. Painting over primer not fully cured will suck up every time . I use a generic 2k economical primer. Under 100 dollars a kit 4:1[/quote]
yeah i usually always end up spraying the next day after i prime and sand it down, not sure if ive primed and painted the same day yet. i try to not rush jobs as they come back and bite me if i do. i try to get all the scratches out as i can, so i wont have anymore problems, the only way to learn is by messing up, well at least that how ive learned lol
[quote=”wjieling” post=28519]O ok, I’ve seen a couple that say they are rollable, but in my mind everything in auto body was sprayed on lol :silly: I’ll have to try that sometime I guess, I just graduated high school last June, and I’m trying to be self employed and learn as I go, and going back to school this semester or next for Autobody .[/quote]
good job! Keep going :cheers[/quote]
thank you and i sure will!
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