#varnish patchy/cracking - looking for possible reasons

12 messages · Page 1 of 1 (latest)

craggy jackal
#

So I've used my Vallejo Satin Varnish today and had the varnish coming out very... Well patchy - see image attached.

I shake the varnish quite a bit and I'm not sure if it's simply still too little and this is a common issue, or if I do something else wrong.

Is another layer of varnish going to make it worse or better? Advise welcome.

chilly brook
#

Probably a humidity or temperature problem

#

Not much you can do about it

#

I don’t think another layer is gonna do much

undone sparrow
#

Did you paint it on or airbrush?

#

I don't think another layer will make it worse. Unless you are airbrushing it from too far away, then you'll get orange peel texture

fathom wren
#

I actually think it looks kinda cool. Black marble vibe

craggy jackal
#

Thanks for the feedback!
I didn't consider the temperature, to be honest. Humidity was fine, but it was quite cold out - I think I may not have "heated up" the varnish enough.
I was pondering back and forth, and I decided to coat it again, which improved the situation a bit, but not completely. this time I put it into a moderately warm bath of water for a couple of minutes beforehand

#

And while I also think it looks kinda cool, I couldn't for the life of me reproduce it 😄

undone sparrow
#

Unless you store your paint in an unheated area outside your house (garage), warming up the can isn't needed. Now knowing that you used a rattlecan, most of the time these problems are spraying too much or spraying from too far.
It's usually not humidity or temperature.

#

Too much pooled varnish leads to cracking and crazing and frosting. From far away or windy conditions makes uneven application, and uneven texture.

pearl stump
#

My experience is that unless the outdoors where you live is at room temperature, both humidity and temperature (outdoor cold/chill) when spraying with rattlecans certainly are factors that might create strange crackling or frosting in clear varnish.
Then again, if I stored my cans outdoors at this time of year they would be frozen solid.