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Step 1
Learn what unsunk nails actually are when you've installed base mold. This day and time, most base mold is installed with an air gun. An air gun runs off of pressure from a compressor. You can set the compressor to sink your nails into the wood when using a nail gun.
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Step 2
Look carefully at your base mold after you have finished using the nail gun. Occasionally, you will have nails that are not set in your base mold. This is normally due to rapid firing of a nail gun. Another reason that nails may not be set is that you're not holding your nail gun tight against the base mold. This causes the nail gun to bounce and not sink the nails into the wood.
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Step 3
Check out this way of setting an unsunk nail in your base mold. Fix it by using a hammer and a nail punch (or a nail set). A nail set is a tool that is tapered on one end and has a flat point. This is so the set can be held flush on the nail head as you sink the nail by hitting the set with a hammer.
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Step 4
Use the old-fashioned method of nailing base mold (with a hammer and nails). This means you must set all nails that you have driven in your base mold. When you hand nail base molding, you don't drive the nail all the way up because your hammerhead will indent your base mold and make it look bad. Therefore, you leave your nail 1/16 to 1/8 inch of the way out. Now set all nails with your nail set and hammer.
