Wow --- thanks for all the great input guys. Awesome info. The future seems like what most are doing but I would rather avoid windexing the Iwata, so may look into the dedicated gloss coats.
So the acrylics wont give that white look? What infact causes those nasty reactions? I see too little drying time from the above poster on here but anything else?
I have always just flatted over decals with spray MM dullcote over the years and weathering always would always hide any issues with silvering as I never saw any issues.
Windex wont harm your Iwata. I have ran acetone through mine for years and its still going strong. You can clean up Future with
rubbing alcohol and youll be ok. Basically any acrylic thinner will do, just dont wait too long before cleaning, you dont want that stuff to set up INSIDE the airbrush.
Most of the time Ill use Future or Alclad aqua gloss for clear coating. Both work exceptionally well and either one is a good choice. Just make sure to let them fully cure before decaling, especially if you are using any decal solutions.
Another good option to consider for a flat coat is AK's Ultra Matte Varnish. I used to use the Testor's dull coat but since I weather primarily with oils now that is no longer an option. I have had good experiences with Vallejo's matte coat, however on my last build, the matte coat seemed to haze slightly ( possibly from me not thinning properly). But I have been very impressed with the Ultra Matte Varnish from AK.
Hope this helps.