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Primer / paint question

 
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Carlos Sa



Joined: 13 Jan 2006
Posts: 96

PostPosted: Sun Jul 09, 2006 5:50 pm    Post subject: Primer / paint question Reply with quote

Hello, all

This is probably going to be obvious for a number of you.

I have applied a first coat of zinc chromate to some parts with a sponge brush.
In some spots, I get an ugly effect when applying the second coat.
It happens almost immediately.
All parts where previously scrubbed with scotch brite (color to remain unidentified), and then
swiped with a clean rag. I always wear gloves while working. Cheaper than H2O2 and band-aids. And
avoids fingerprints.

Any ideas what causes this? I see no apparent pattern...

Carlos
Montreal, Canada
CH601-HD, plans
do not archive




__________________________________________________________
Lèche-vitrine ou lèche-écran ?


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CH601-HD, plans
Montreal, Canada
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gboothe(at)calply.com
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PostPosted: Sun Jul 09, 2006 6:18 pm    Post subject: Primer / paint question Reply with quote

Carlos,

You did not say how long the drying time for the first coat was. Is it
re-emulsifying with the second coat?

Somebody out there correct me if I am mistaken, but isn't two coats of zinc
chromate an overkill? It has been my understanding that a thin film is all
that is desired.

Gary Boothe
Cool, CA
601 HDSTD, WW Conversion
Tail done, working on wings....
Hello, all

This is probably going to be obvious for a number of you.

I have applied a first coat of zinc chromate to some parts with a sponge
brush.
In some spots, I get an ugly effect when applying the second coat.
It happens almost immediately.
All parts where previously scrubbed with scotch brite (color to remain
unidentified), and then
swiped with a clean rag. I always wear gloves while working. Cheaper than
H2O2 and band-aids. And
avoids fingerprints.

Any ideas what causes this? I see no apparent pattern...

Carlos
Montreal, Canada
CH601-HD, plans
do not archive




__________________________________________________________
Lèche-vitrine ou lèche-écran ?


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jean-paul.roy4(at)tlb.sym
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PostPosted: Mon Jul 10, 2006 4:45 am    Post subject: Primer / paint question Reply with quote

Sometimes, too much is worst than not enough.
Just my opinion

Jean-Paul
do not archive
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noelloveys(at)yahoo.ca
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PostPosted: Mon Jul 10, 2006 4:59 am    Post subject: Primer / paint question Reply with quote

Do you wipe down the parts with a bit of MEK before priming? If you don't
like MEK, who does, then you can try methyl hydrate.

Noel

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