AND WILL LOOP HIDDEN | MODEL CONSTRUCTION

Offer homebrew. engaged in the manufacture or have manufactured furniture with doors mounted on piano hinges to replace them on domestic furniture, because the presence of piano hinges, even on well made furniture clearly indicates its self-made origin is unsightly.

However, the house master, who wished to use invisible from outside of door furniture hinge, faces the challenge of manufacturing on the inner side of the door for every fly round recesses with a diameter of 36 mm with flat bottom and a depth of 11 mm when the thickness of the chipboard 15 mm. in which interference should enter the door part of the furniture hinge.

At the furniture factory the groove is drilled on a special machine tool resembling a finger milling cutter. I drilled a normal drill with a simple drill of their own making, which offer homebrew.

It consists of two parts—the round mandrel and drill bit flat actually. Mandrel turned on a lathe from steel rod of suitable diameter. Its simple, neither high precision nor high-grade surface finish is not required. However, it should be made from one setup to avoid runout. After removing from the machine is required at the bottom of the mandrel through its centre draw a 2-axis at an angle of 90 degrees. In parallel, the first distance of 25 mm from the bottom to drill a through hole with a diameter of 6 mm and cut the bar from the bottom up to the hole to make a groove with a width of 2.5 mm, I sawed through it on the machine with a thin abrasive cutting circle (it is possible to saw through the groove and manually — saw blade pack of canvases required thickness).

Parallel to the other axis at a distance of 17 mm from the bottom of a drilled through hole with a diameter of 4.5 mm To the groove in the hole tapped M6, and on the other side of the mandrel and the hole to reams of groove up to a diameter of 6.5 mm: it is inserted into the bolt М6х30 and wrapped.

Bit is a chip of the saw is from the “Belaruski” keen on the sanding disc as an ordinary pen drill, with only minor differences in elevation of the cutting edge is only 1 mm (below the bottom of the recess was flat).

The drill bit is inserted into the groove of the mandrel so that the distance from the bottom of the mandrel to the tip of the center drill was about 12 mm, and firmly clamped in the mandrel bolt. The center of the drill, of course, must be on the axis of rotation of the mandrel.

The tool is ready to work. Drilling deeper under the loop follows the drill, after passing through the center of the recess hole with a diameter of 1-2 mm to a depth of 10 mm. Drill should be of sufficient power: small, like a hand drill, drill out the recess I failed. Drilling is preferably from once to a depth until the bottom of the mandrel will not fall to the surface of the particle Board In any case before drilling the recesses in the doors, it is desirable to test the operation on the wrong piece of particle Board.

The mandrel can be clamped flat and the first drill other necessary homebrew diameter.

S. SMOLYAKOV, Labor village, Moscow region

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