Our engines have a lot of intricate details like sanding lines, air hoses, and MU hoses that can get caught in the foam. The weight of the engines cause them to sink down in the foam, and when you pull them out, those intricate details can snag on the foam and break off.
Place these grooved wood bases in your tray to hold your engines more securely and protect all those intricate details. If you have a lot of brass engines, these bases are a must!
These bases are cut from 3/8" thick particle board. These are about a pound lighter than the MDF bases if weight is a concern.