MDF Movement Trays 40mm x3 - Skirmish (Green Stuff World)MDF Movement Trays 40mm x3 Position your units, troops, and regiments on the wargame battlefield with these MDF movement trays. They're cut with a high precision laser and can be arranged in different ways for different formations, as seen in the photos. The trays come in two units, each with two 3mm thick MDF parts which can be easily stuck together with White PVA glue. Each unit allows 3 x 40mm bases.