Could I just add my penny's worth, Ifind gloss acrylics require an appreciably longer drying/curing timewhen compared to matt acrylic paints,with
Tamiya gloss I would notattempt to mask or wet sand for at least two days if possible I wouldleave longer.When applying acrylics I aways lay a primer downfirst,this is after first preping the surface,I just won't risk it asI've had acrylics on a couple of occasions lift,for priming I'vesettled on using Alclad grey/white primer,although very good resultscan be obtained using Halford's grey aerosol primer. The only acrylicI would risk putting down without a primer would be paints from theold Aeromaster/Pollyscale range,although of course they are no longermanufactured.(I still think they were the best acrylic modeling paintevery produced for smoothness of finish and toughness).
Although we tend to say acrylics cureafter a few days I don't believe thy complteley cure until a number ofweeks or months have gone by,
A final point if the acrylic paint isgoing to be handled or worked a coat of varnish such as Klear is wellworth considering.
Malcolm