countersinking การใช้

• Even countersinking the nails and filling them with putty may not work for very long.
• There are cures, such as countersinking the nails and filling the holes with putty.
• NOTE : Drawing titled " COUNTERSINKING A HOLE " goes with this column.
• However, I am confused when the plans or instructions refer to the need for countersinking.
• It steam-bends easily, holds screws well but pilot holes and countersinking are needed.
• Besides, the clapboards are only 1 / 4 inch thick, not thick enough for effective countersinking.
• This is not as good as pulling the old nails, because countersinking clear through the clapboards could spilt them.
• Drive a hot-zinc dipped galvanized finish nail 2 1 / 2 inches long into each hole, countersinking them.
• Q . I saw some great self-countersinking screws that need no predrilling at a home show some years ago.
• CAPTION : Countersink bit will bore the three different pilot holes needed for countersinking the head of a flat head screw.
• It is also called a countersink, doing the obvious chore of countersinking nailheads into wood so the hole can be filled.
• A . Yes, countersinking all nails is necessary to prevent any protruding nails from tearing apart the sanding paper and perhaps the sanding machine.
• Good chatter-free results can usually be had by countersinking by hand ( as opposed to running the tool in a powered spindle ).
• Of course, if the floor is going to be covered, you could drive screws directly through the floor into the joists, without countersinking them.
• I thought of fixing the problem by countersinking the nails and filling them with putty, or sanding each nail head and applying a dab of sealer before repainting.
• Countersinking the nails is not a good idea because the clapboards are only 1 / 4 to 3 / 8 inch thick, and you run the risk of driving the nails clear through.
• Whether manual or automatic, the processing of tapping begins with forming ( usually by drilling ) and slightly countersinking a hole to a diameter somewhat smaller than the tap's major diameter.
• Drill the pilot hole first, then the shank hole; finally use a larger drill or countersink bit to drill the clearance hole for the head ( countersinking is only necessary for flat or oval headed screws ).