Stewarts Systems Fish Eyes - Page 2

E. D. Eliot · #11 02-01-2016, 03:36 PM

I am really interested in the outcome/resolution of this SS problem. Please keep us all informed when you resolve e the problem.

Two months is way too long without resolution - suggest that you try talking to the US factory. I am considering SS and the resolution of your problem may be the deciding factor on Y/N.

Please keep us advised.

sglynn · #12 02-01-2016, 04:02 PM

I'm currently painting also and here is what I've learned about fish eyes.
Somewhere contamination is getting on your part.

1) So are you using a de-waxer & de-greaser? And using it liberally. I mean spray it on soaking wet out of a spray bottle then wipie it off with new clean clothes, before painting? Just using a damp towel is not good enough.

2) One way I fixed a few fish-eyes, is that after the first coat you can see where a fish-eye is forming. This is during the flash time, while I'm waiting to spray the second coat. Take a small (very small) paint brush and put a dab of paint on the fish-eye. Touch it right in the hole. You might even move the brush around a little to mix up the dab with surrounding paint. Yes this makes a mark on the first coat. But it seems to get rid of what ever is contaminating that spot. And the second coat covers it up and you never see it again. Just be delicate with touching up the fish-eye.

PS, I have also dabbed paint on a fish-eye the next day, after the paint has "dried". After a few more days, you can't see it. Seems like paint doesn't really dry overnight, but dries and sets over time, so a little dab gets absorbed if done right away.

TroyBranch · #13 02-01-2016, 04:49 PM

Quote:

Originally Posted by sglynn

I'm currently painting also and here is what I've learned about fish eyes.
Somewhere contamination is getting on your part.

1) So are you using a de-waxer & de-greaser? And using it liberally. I mean spray it on soaking wet out of a spray bottle then wipie it off with new clean clothes, before painting? Just using a damp towel is not good enough.

On the test panels I used wax and grease remover, thinner and alochol to clean it. All the same results. On primer the only item is 91% alcohol lightly sprayed on a high quality low lint new towel and wiped down prior to top coat. If the primer is new this step is not a have to but recommended. The prime coat sprayed fine and I get the same results on bare aluminum and primer with the top coat.

TroyBranch · #14 02-01-2016, 04:53 PM

Quote:

Originally Posted by Mitch757

I had the same thing happen when painting small parts and, for me, it was in the gun itself. I washed it with acetone, then Dawn, then 91% rubbing alcohol.

Finally, I got a good application on my parts. I don't know where the contamination came form since the gun worked well in the past.

I clean the gun with water then lacquer thinner each time. I am using at Sata 4000B gun and disposable cups. Your method is worth a try. Not sure where the contaminant can be in the gun. Was this with a SS product?

Alex Edwards · #15 02-01-2016, 05:26 PM

I haven't painted my rv-12 yet but tried some smaller test pieces. I had some fish eyes that I traced to mixing the paint. I was using a small siringes to get the correct paint volume. These apparently has silicone in them. I used non-silicone ones from a medical supple place and the issue went away. Could it be something in your mixing?

TroyBranch · #16 02-01-2016, 05:46 PM

Quote:

Originally Posted by Alex Edwards

I haven't painted my rv-12 yet but tried some smaller test pieces. I had some fish eyes that I traced to mixing the paint. I was using a small siringes to get the correct paint volume. These apparently has silicone in them. I used non-silicone ones from a medical supple place and the issue went away. Could it be something in your mixing?

I am mixing in the disposable Sata cups. All new stir sticks. Same process as I did on the first plane with no issues.

RBR · #17 02-02-2016, 12:21 AM

Hi Troy,

Just wondering aloud here... I too am using SS. I changed from Insignia Blue to Insignia White as I struggled to get an acceptable finish with the Blue.

One of the issues I had was with solvent pop. Could that be what you have, or is it fish eyes? I sanded back countless pieces before resolving my issue. Too heavy a final coat, usually laid on horizontal surfaces.

Best wishes,

RBR

TroyBranch · #18 02-02-2016, 06:46 AM

Quote:

Originally Posted by RBR

Hi Troy,

Just wondering aloud here... I too am using SS. I changed from Insignia Blue to Insignia White as I struggled to get an acceptable finish with the Blue.

One of the issues I had was with solvent pop. Could that be what you have, or is it fish eyes? I sanded back countless pieces before resolving my issue. Too heavy a final coat, usually laid on horizontal surfaces.

Best wishes,

RBR

Solvent pop usually boils out. There is many area that the finish sinks, like it is starting a fish eye but is not deep. All my surfaces are vertical where if I had to much paint it would at least sag. I got the gun setting nailed for the finish I want. You need enough to flow but not run. I sprayed 4 gallons of this stuff on the last plane with not a single issue. Fire horn red, drab tan and black. Black is working and I should get the red this week. If it works, I am changing the color.

Jeff Hagg · #19 02-02-2016, 07:40 AM

There are several things that will cause this. Oil in your air line, Armoral in the air and using a new tack rag before appling paint. Always use a "used" tack rag on final surfaces if you must.
If you are using a new air line and or a used one that has been attached to a sander, drill etc. run some thinner through it and blow it out till dry.

TroyBranch · #20 02-02-2016, 08:04 AM

Quote:

Originally Posted by Jeff Hagg

There are several things that will cause this. Oil in your air line, Armoral in the air and using a new tack rag before appling paint. Always use a "used" tack rag on final surfaces if you must.
If you are using a new air line and or a used one that has been attached to a sander, drill etc. run some thinner through it and blow it out till dry.

I use tack rags designed for the water borne paint. When it first happened I put every Armorol container in the house. Bought a new hose, went to half inch hose from the compressor to the filters and a shorter 25ft, 3/8 line to the gun. I flushed that line with wax and grease remover to make sure it was clean before I used it. Checked the exit air with a mirror to confirm dry clean air.

I really appreciate all this feed back, if any thing it will be a source of good info for everyone