Barbed or Kerf-Cut Hinges

Barbed Hinges (Click on picture for a larger view)

Barbed hinges are usually used on wooden or plastic boxes and cases. These hinges are inset into a narrow kerf slot cut or molded into each half of your case and are practically invisible while providing a secure closure. Saw blades to cut the Kerf and installation instructions are shown below.

The #1765 Barbed Hinge hinge is approx 1-1/8" wide and 7/8" in height. (Same as Ludwig 1297.) See installation instructions below.

The #1765S Spring Loaded Barbed Hinge hinge is also available. It is the same size and shape as the #1765 hinge shown above, but with the addition of a small spring will hold tension on your box top in either the closed or open position. The spring does require extra clearance to be cut in the box and this is usually done with a router.

The #1299 Barbed Hingehinge is approx 1-1/2" wide and 13/16" in height. The knuckle on this barbed hinge is offset placing the knuckle outside the box and does not require a bevel on the back corners of your box like the 1765 or 1791. The offset is approximately 1/8". (Same as Ludwig 1299.) See installation instructions below.

The #1791 Barbed Hinge hinge is approx 7/8" wide and 9/16" in height. (Same as Ludwig 1296.)See installation instructions below.

Barbed Hinge Installation

(Click on picture for a larger view) Since the pivot point for the #1765 and #1791 barbed hinge is at the center of your box wall, the back edges of your box must be beveled at 45 Degrees to provide clearance for the hinge action. The #1299 does not require a bevel. Depending upon the amount of hinge that you wish to allow showing, the hinge can be mounted in either of the positions shown. Saw blades for these hinges are shown below.

Saw Blades for Barbed Hinges

(Click on picture for a larger view.) For the #1765 Hinge and the #1299 Hinge a 2-3/4"diameter x .035" thick jewelers slotting saw for softwood, and .046" thick saw for hardwood is commonly used to put a kerf in the box at the correct point. Slot width may need adjustment depending upon the hardness of the mounting surface.

For the #1791 Hinge a 2" diameter x .022" thick jewelers slotting saw is commonly used to put a kerf in the box. Slot width may need adjustment depending upon the hardness of the mounting surface.

Either blade can be held in the available Blade Arbor which can be mounted in a drill press or other woodworking machine. A spring loaded mechanism readily accepts saw blades with hole diameters of 1/2"-5/8"-3/4"-7/8" and 1". Blades are firmly secured in position with a hex head screw (wrench provided). This arbor has a 1/2" shank for your machine and is 2-3/8" overall length.

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