Mdf plinth 2 3 4 in x 4 1 2 in interior white mdf classic mid moulding block.
Join crown molding middle wall.
Use scarf joints on long walls.
Most crown comes in 16 foot lengths so unless you re trimming out a gymnasium a single piece can usually span each wall.
When it can t two lengths join end to end in a scarf joint 4.
On occasion you may find that you need to join 2 pieces in the middle of a wall.
Join sections of crown on long walls using scarf joints.
Known as splicing or a scarf joint this task is fairly simple with the right tools.