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pinholes vs orange peel and retardee

2/25/20

So it seems like I always balance between slight orange peel and slight pinholes/cratering/bubbles/solvent pop whatever you call it. What I mean is when you have solvent that pop to the surface and the finish is tacky but cannot flow enough to fill the hole created.

Some people have recommended using retarder. tried it with mixed results. Althought the finish stays wet longer it also seems to allow for more solvent to pop.

I have tried force drying it using heated air to trap the solvent...WORST idea ever. got pinholes everywhere and the were like pimples...like my teenage years

So far the best solution is spraying thinner coats but they have a tendency to orange peel slightly. nothing horrible and it generaly levels itselft after 48-72h cure. You have to watch with a light shining at an angle to see the remaning peel.

So is retarder really a solution to pinholes. Would it be better to try balancing between wet (but pinholing) coats and thin slightly dry orange peeling ones.

2/26/20 #2: pinholes vs orange peel and retarde ...

Shane

start here:
tell us what exact product your spraying... exactly how your mixing.. ratio's, additives etc etc.... what spray equipment your using... and the environment your spraying in as well as room temperature. Can you give us an accurate wet coating thickness your laying down as well and i'll give you my .02 cents.

2/26/20 #3: pinholes vs orange peel and retarde ...

mastercabman

Like Shane said
We need more info
Are you spraying CV ?
Did you prime/seal ?
What equipment are you using?
You should have a nice finish look within an hour after spraying CV
Even with precat I get a nice finish in that time
As many topics you posted lately I strongly suggest you sign up for a class that teaches finishing
It makes all the difference
At least it did for me

2/26/20 #4: pinholes vs orange peel and retarde ...

pascal stgelais

using turbine HVLP fuji
spraying mohawk ultra clear CV retarded about 5 to 10%(max recommended) no other additives.
I heat the place up to 21C (about 70-71 degree) for 24h before spraying
I sprayed a wet coat on glass plate and mesured about 3 mil

2/26/20 #5: pinholes vs orange peel and retarde ...

Shane

your issue is the Fuji turbine heating your coating as well as turbines have a reputation for not being able to throw material down quick enough.... If I had no other choice I would shoot coating with an old school cheap pressure pot with a conventional gun before I ever fooled with an hvlp turbine.... too slow for me.
you could try doubling the length of your hose to help with the air temperature.

2/26/20 #6: pinholes vs orange peel and retarde ...

mastercabman

Yep!
Ditch the turbine
Too slow and heats up too much especially in the summer time
Also when I spray MLC product it calls for 4-5 mill wet
Don't know much about mohawk brand
Except for their touch up products

2/29/20 #7: pinholes vs orange peel and retarde ...

Dan drb woodworks

We use Ml Campbell to get rid of the solvent pop, we use the flow enhancer

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pinholes vs orange peel and retardee

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