Yes, you can spray cabinets as a DIY project, but it requires the proper set-up and a confident hand with a paint sprayer. For achieving the smoothest finish, spraying the cabinets can be a great option. However, one of the downsides of spraying is the difficulty in controlling overspray. Setting up a spraying station and spraying the cabinet doors and drawers may be a viable option if you have the space to do so. However, if you are not comfortable with spraying, using a good brush and a small roller can still yield great results.