This particular board did not need an enclosure. Instead, I mounted it on raisers. Holes for raisers were already drilled.
If you do have an enclosure, you may want to try to fit it: drill the holes and/or cut openings using a tool like a nibbler.
![Using a nibbler to customize enclosure](http://baltazarstudios.com/wp-content/uploads/2013/12/pcb-13-enclosure-nibbler-512x341.jpg)
This is an image of one previous project. Rectangular holes were cut out by using a nibbling tool. The top cover was custom 3D printed by a friend of mine (BB – thanks!) who built his own 3D printer.
![Custom box cover made with a 3D printer](http://baltazarstudios.com/wp-content/uploads/2013/12/pcb-13-enclosure-custom-cover-e1386692235440-512x369.jpg)
You can be creative with enclosures; although you can buy new ones and spend more money, many times you can reuse boxes like in the picture – a spare telephone connection enclosure box worked just fine!