|Pair of Vypers|
A friend asked that I provide a tutorial for sealing models. I think of this as fairly straightforward, but realized there are some important nuances, after the link.
I use spray sealers that are very similar to spray-paint. Importantly, these are a clear coat. There are a variety of clear coats to choose from that include matte finishes - which dull colors - to glossy finishes, which make it shiny!
Games Workshop's Purity Seal (and no longer available!) is neither a matte nor a glossy finish. It provides a very good clear coat, in my opinion. In the past for a matte finish, I have used Armory's Clear Matte. Given all of this, I apparently need to find another sealer... possibly The Army Painter's product.
For the technical act of sealing - Army Painter has a good visual guide.
|Straight from The Army Painter|
I highly recommend using a varnish finish of some kind.