A keyhole saw is a specialised byword that is useful for make small holes in woods or wallboard .
What Is a Keyhole Saw
A keyhole saw , or compass adage , has a belittled pointed vane and a Sir Henry Joseph Wood or plastic handgrip . It is useful for cutting holes in softer woods or in dry wall , such as cutting a hole in a paries for a new galvanic shift . Most keyhole saws have a individual grip to which various blade can be fit . The blades vary in width , duration , and number of teeth , or points . sword length range from 5 to 15 column inch , and there are 5 to 20 teeth per inch , with 8 to 10 being most rough-cut .
How to Safely Use a Keyhole Saw
To safely use a keyhole saw , take the appropriate blade and firmly seize it to the handgrip . Depending on the material being geld , a starter pickle may need to be drilled in the wood or drywall so the baksheesh of the keyhole saw can be inserted . For wallboard holes , use short - length leaf blade so the backsheesh of the vane does not punch through the opposite wall . punctuate the placement to be edit with a pencil .
To cut , move the saw forward and back carefully to survey the line . Do not apply surplus pressure during the stinger or the blade may become jam-packed in its cut and make further cutting or remotion unmanageable . For safety , make certain the keyhole see blades are sharp and that grip are hard attach .
How to Maintain a Keyhole Saw
Most keyhole saw are relatively inexpensive to purchase , so professional sharpening may be more dearly-won than buy a new blade or saw .
Tools Related to the Keyhole Saw
Other useful hand saw include thecrosscut saw , ripsaw , back saw , coping byword , andhacksaw . In addition , electric - powered keyhole saws , such as reciprocate sawing machine , are uncommitted .
