Review: Colour Forge Spray Primers - more paint for less & matched to Citadel Colours » Tale of Painters
The Army Painter GameMaster - Terrain Sealer: Matt Sealer, (10 Ounce) - Matte Spray Paint Primer with Matte Filler Primer for Crafts, Dungeon Dragon Terrain Tiles, & Tabletop Wargaming Scenery. - - Amazon.com
How to seal and spray or paint MDF edges (Tutorial) - YouTube