Brian
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^check out my air system and let em know if it is sufficent. I just changed the hose yesterday, same thing. Wasting $ but no results lol
http://www.youtube.com/watch?v=xt0eR8ckF_M
[b]RatStang wrote:[/b]
[quote]Well damn…
Does it show up during your application of clear, or does it show up afterwards?That’s a hard one, because it is so contained.
Looks like it could either be clear pop. or fish eyes.
One will occur during (Fish eyes) one will occur after (Solvent Pop)
Does seem a little big for Solvent pop.
I would say Because:
#1: you aren’t getting it in previous coats. (Fish eyes attacks thin base coats the hardest)
And because:
#2: it is so contained. (Not multiple spots all over in a small area on the surface. The chances of having a pre paint surface contamination the size of a pen head in only one single spot and nowhere else is pretty unrealistic.)My bet is you’re putting it onto the surface yourself.
Rather it be something air born in the shop. or some sort of Contamination coming from you, your air compressor, your air line, your gun, your heating source, virtually anything that it can be exposed to.My guess would be you’re over working your air compressor or dryer system and by your final coats it’s just had enough.
You have a small leak in your airhose/fittings by chance?
What is your heat source?
I’m not sure, you got me stumped Nexson.
The fact that it isn’t showing up in your basecoats, and that it is so contained leads me to believe you’re putting it on there during your final coats.[/quote]Yea, so like your said, my issues do not show up in the basecoat at all. I have tried painting inside and outside with the same exact results. It was as if no matter where I painted it, I would have the same problems, which narrows it down to my air supply (which I doubt) or contamination, which I find hard to believe as well, but when it comes down to it, it is one or the other. I don’t have a heat source as I do the whole garage/outside painting bit. I don’t have any air leaks and everything sound. You guys really know how to think of every possible option that may cause the problem so I appreciate it!
[b]MoCoke wrote:[/b]
[quote]it could be fisheye, possibly coming from oil in the compressor. but it could also be defective clear. but it looks more like fisheye so its either oil or water. the set up you have probably isnt doing the job correctly or your trap is to close to the compressor. try using the motor guard spray gun filters instead of the snake. i got a few filters from the compressor to the booth but i can always tell the difference if i forget to turn on the air drier. so yea an air drier definitely helps out a lot[/quote]This problem has happened with about every clear I have used. it is hard to believe it is my airline because I have an air dryer, about 75 feet of hose and 3 FOOT “SANKE” right before the gun, however, I am going to be open to whatever may solve the problem. I have the air dryer 20 feet from the compresson and 20 feet of black iron piping on a downward angle back to the compressor inbetween.
[b]bondomerchant wrote:[/b]
[quote]the thing you need ta take notice of is that bump in the center of your crater thats your problem right there figure out where thats coming from an youll solve your problem 😉 thats contamination[/quote]Bondo, so this is the same problem I had that you helped me out with a while ago. As I have started to paint larger panels now, it seems to be coming back. But for sure, you are noticing the dot in the middle which is key to solving the problem.
[b]Andy T wrote:[/b]
[quote]And again, you can see the cause of the problem right there in the centre of the fish eye.Firstly, don’t be tempted to use a fish eye additive – short term gain, long term pain 😉
Until you get to the root of the problem, there are a couple of hack tricks you can try if you’re only getting the odd one here and there. Get a pin and try to ‘burst’ that bubble at the centre of the fish eye whilst the clear is still wet. That may be enough for the clear to flow into the hollow.
If that doesn’t work, again while the clear it still wet, dab a little blob of clear into the fish eye with a fine brush. This should flow out and be almost invisible when the clear has dried. You may end up with a little lump, but that’ll sand out much more easily than a hollow.
Neither of the above are actual cures, or indeed recommended procedures, but just short term quick fixes until you get the contamination problem licked :)[/quote]
These are good solutions to fxing the problem after the fact, hopefully I can get to the Root *(no pun intended) of the problem
[b]jimmo wrote:[/b]
[quote]I am just leaving the BASF training center, I wandered off and was talking to a few Chemist’s, they were intrigued by the site so when I showed them they had a look at this thread.Basically said it’s some form of contamination causing it, they just advised you really chceck your spray environment…also said to try a proper BASF clear! LoL
They told me some stories about finding jobs being strangly contaminated by things from popcorn grease to having a photocopier to close to the booth. One of them also seemed to think it looked similar to a problem they experienced with a place where the bOoth wasn’t well sealed and bondo dust from outside the shop ended up contaminating the paint jobs.[/quote]
WOw Jimmo, that is really cool that you did that for me. Me thinks it is contimination as well, but it just bewilders me how it does not show up in the base. Now, contamination will happen, that is fine, but my methods of removing contimation are not working, assuming it is)
[b]bondomerchant wrote:[/b]
[quote]have you tried shooting clear without the snake???ya might be getting somthing outta that??[/quote]Yes, because I actually forgot to use it! I am going to get rid of that thing as it is annoying. I am going to go back to the mini inline filter.
man!!! you should have posted this 2 weeks ago before I buffed out the run lol
ah bondooo!!, this is not like you! you know replacing quarter panels and all! :cheer:
[IMG]http://i36.photobucket.com/albums/e25/nexson1/IMG_7054.jpg[/IMG]
[IMG]http://i36.photobucket.com/albums/e25/nexson1/IMG_7057.jpg[/IMG]
[IMG]http://i36.photobucket.com/albums/e25/nexson1/IMG_7059.jpg[/IMG]
[IMG]http://i36.photobucket.com/albums/e25/nexson1/IMG_7060.jpg[/IMG]Well the nail is almost down, but not totally in yet; I got some little crators, with a white fot at the center.
Not sure if it is from the higher PSI, had this problem before with the pressure boosted up.
[IMG]http://i36.photobucket.com/albums/e25/nexson1/IMG_7045.jpg[/IMG]
Thanks bondo! It will stay open from here on out!
canuck
check out the beginning of this video for my setup.
http://www.refinishnetwork.com/discussion-forum/gallery/video-of-me-painting-emblems-garage-painting.htmllooks great HaN! Keep posting up those pics man! Take pics of the work inbetween!
Great job again!
Thanks guys for all your help!!!
After painting and sanding down this grill at least 10 times, I finally nailed it.
First off I learned how to use the paint mixing cups with the ratios. Yea I know, a little late, but I thought I was mixing accurate with the cooking mixing cups, but really I realized I was probably off a little here and there. At any rate I pumped up the PSI to 25, I opened the fan wide open and I used my 1st coat as a tack coat.
After three coats, I got fantastic results, at last! It is so cool to see how well the clear takes after that 1st light-medium coat.
Pics!
[IMG]http://i36.photobucket.com/albums/e25/nexson1/IMG_6999.jpg[/IMG]
[IMG]http://i36.photobucket.com/albums/e25/nexson1/IMG_7003.jpg[/IMG]
[IMG]http://i36.photobucket.com/albums/e25/nexson1/IMG_7006.jpg[/IMG]
[IMG]http://i36.photobucket.com/albums/e25/nexson1/IMG_7008.jpg[/IMG]its all good Han, the whole reason why I am doing the small thing is to get good for the big things, so in that case I will have the gun!
ok great! I am going to do all of this
Should I still be doing a quick 1st tack coat?
its weird, because you think the lower the pressure, the less runs, the high the more but I am going to give ti a try! thanks!
Right now I am struggling with runs in the clear. I need to either open my fan a bit mor, turn in my fluid control knob or lower my pressure, but I am 20psi
can’t wait to see how this one plays out! Do people wash their cars where you live lol
[IMG]http://i36.photobucket.com/albums/e25/nexson1/1-15.jpg[/IMG]
[IMG]http://i36.photobucket.com/albums/e25/nexson1/2-14.jpg[/IMG]