Device for precise drilling at an angle of 90 degrees with a conventional drill

Maintaining a clear right angle when drilling with a drill is not so easy. Experienced craftsmen admit that such a habit is developed over the years, but still does not guarantee accurate drilling. After all, it is done by hand, which means there is always some probability that the mounting hole, for example, for furniture or mounting fittings, will not be correct.
This device is very simple, and is literally made from leftover building materials. Particular importance here is given to furniture telescopic guides for drawer drawers. It is with the help of them, and a couple of plumbing clamps, that we will make this device. Well, are you ready? Then let's get started!
Device for drilling at an angle of 90 degrees

Accessories


  • Furniture telescopic guides, length – 250 mm;
  • Wooden slats 20x40x250 mm;
  • A piece of wooden platband for the frame, length – 150 mm;
  • Mounting corner – 50x50x40 mm;
  • Furniture screws or press washer;
  • Plumbing clamp (selected according to the size of the drill body) – 2 pcs.

Tools


  • Drill with a set of drills and an attachment for the crosspiece of self-tapping screws;
  • A crosscut saw, a jigsaw or a regular hacksaw for wood;
  • Pliers;
  • Marking tools: square, tape measure, marker.

Manufacturing (step by step instructions)


To prepare furniture guides for installation, they must be disassembled. Remove the locking plastic cap and bend the stopper with pliers. We disassemble the guides, separating the pads from each other, carefully maintaining the position of the balls.
Device for drilling at an angle of 90 degrees

Device for drilling at an angle of 90 degrees

We mark the movable block of guides for the mounting holes at a distance of 6 cm and 14 cm from the end of the body.
We first drill with a small drill (3-3.5 mm), and then with a larger one (8 mm) so that a screw for plumbing clamps fits through these holes. It must be cut to length, leaving only about 1 cm in length. We tighten the clamps in the correct order, determining the desired position of the drill.
Device for drilling at an angle of 90 degrees

Device for drilling at an angle of 90 degrees

We mark the wooden slats to the size of the guides and saw off the excess.
Device for drilling at an angle of 90 degrees

We screw the fixed block of guides to the rail with self-tapping screws through the prepared holes.
Device for drilling at an angle of 90 degrees

On the back side we attach the mounting angle. Use a square to check that the fasteners are seated correctly.
Device for drilling at an angle of 90 degrees

We assemble both guide blocks together and fasten them to a wooden frame (piece of casing).
Device for drilling at an angle of 90 degrees

The device is ready, all that remains is to attach the drill to it, aligning it strictly perpendicular to the plane of the bed.
Device for drilling at an angle of 90 degrees

Device for drilling at an angle of 90 degrees

We clamp the drill into the chuck and check the accuracy of the drilling.
Device for drilling at an angle of 90 degrees

Device for drilling at an angle of 90 degrees

Device for drilling at an angle of 90 degrees

You certainly cannot achieve such precision by drilling by hand!
Device for drilling at an angle of 90 degrees

Watch the video


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Comments (4)
  1. Akril
    #1 Akril Guests November 9, 2019 11:54
    2
    It’s a cool device, I won’t say it’s vital, but it’s worth a try, especially not difficult
  2. Yuri
    #2 Yuri Guests November 10, 2019 10:35
    0
    It’s better either a CD or a disk from a screw
    1. Akril
      #3 Akril Guests 11 November 2019 17:57
      0
      what about the disks?
    2. Guest Evgeniy
      #4 Guest Evgeniy Guests 13 November 2019 18:29
      0
      With the help of a disk, you can drill one or two holes, and then you will be tormented by catching the reflection! With this device, you can drill as much as you want and don’t even think about it. Moreover, it is more compact, and with a disk you can’t get anywhere.