Diy Magnetic Wall Board . You will want your trim to be slightly longer than your board so you can nail it directly into the wall (rather. If you are painting a part of your wall, be sure to measure and tape off the section you want painted. How to make an Easy DIY Giant Chalkboard from theturquoisehome.com You can use small nails to hold the edges while the glue dries. Use measuring tape to ensure that the board is. Keep order stylishly with a magnetic board anywhere around the house.