Staining is one of the harder steps in this Instructable, but it is forgiving, even if it takes a while. First, you will need to wipe out the entire toolbox with a damp cloth to pick up any sawdust particles. Then, put on nitrile or latex gloves. You do not want to get stain on your hands. Bring the stain can, the toolbox, a rag, a hammer, and a flathead screwdriver outside or to a well-ventilated area. Oil-based stain contains alphatic hydrocarbons, which cause permanent brain and nervous system damage if inhaled. Make sure to work in a well-ventilated area while doing this step and the next one. Also, N95 dust masks will not provide protection from stain or polyurethane fumes.

Once you have set up the toolbox and the stain outside, shake the can of stain vigorously to ensure that the contents are mixed well. If the stain is not mixed correctly, the finish will come out very weakly and will require more coats to get a cherry finish. Open the can with the screwdriver. Dip the rag in the stain can, and get it really soaked with stain. Leave a thick layer of stain sitting on the wood as you wipe the rag onto the toolbox pieces. In fact, there should be a visible liquid layer on top of the wood as you wipe the rag across it. Let this layer sit on the wood for about 5 minutes, then make sure to wipe it off with the rag. After that, move on to the sides or the back of the toolbox. Once the first layer has been completed, let the toolbox air out in a well-ventilated area.

Once the first layer of stain feels dry to the touch, it is necessary to sand the entire toolbox lightly with 200 grit sandpaper. Wipe out the wood dust with a damp rag. Now, complete the second layer in exactly the same way as the first. You will see the wood become darker as you apply more stain, which is what should happen. You might notice that the end grain is darker that the surface of the wood, but that is a normal condition and is nothing to worry about. Again, let the wood dry and sand it.

Don't forget to dispose of the stain rags carefully and appropriately. Stain rags will spontaneously combust if disposed of incorrectly. Let them dry laid flat on a non-flammable surface and throw them in an outdoor garbage can, or permanently submerge the rags in a water-filled paint can and dispose of the can as hazardous waste.