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Repair of plastic screw mounts

This is a very common occurrence when the threaded sleeve breaks in plastic products. This can happen both from the excess of the twisting force, frequent disassembly of the assembly, and from the aging of the material itself. After all, plastic or plastic products do not last forever and eventually lose their original properties. Restoring the screw mount is possible, and one of the ways I will show you now.

The following materials will be required


  • Thin steel wire.
  • Insulating tape.
  • Tube for insulation of wires.
  • Glue for plastic.

I would like to clarify about the glue. I used the universal gorilla glue that is sold in America. You can use any other glue, which must be intended for gluing plastic parts.

Restoration of the mounting sleeve


Before describing, I want to say that I was repairing two bushes: one was destroyed almost entirely, the other was less than half. I say this so that there are no questions about the photo, as they may have more than one and the same sleeve.
Getting to the repair. The first step is to choose a rod or tube that is close in diameter to the plastic sleeve. We wind the wire on the frame.
Repair of plastic screw mounts

Bite off the extra turns.
Repair of plastic screw mounts

We adjust the size of the spring to the length of the sleeve.
Repair of plastic screw mounts

Having bitten off excess, we check. The spring does not protrude, sits tight.
Repair of plastic screw mounts

Wrap with electrical tape over the spring. This must be done so that the glue does not pour out, which we will fill in the sleeve.
Repair of plastic screw mounts

At this stage, glue could be poured, but then it would have to be drilled under a screw. To avoid this, insert a cambric or insulation tube into the bore of the sleeve. The glue will not flow into it and the hole will remain intact.
Repair of plastic screw mounts

The tube is tedious to pick up a smaller diameter than the hole.
Repair of plastic screw mounts

Insert the tube all the way into the threaded hole.
Repair of plastic screw mounts

And now we are already pouring glue.
Repair of plastic screw mounts

The glue penetrated well into all cracks and cracks, this is clearly visible.
Repair of plastic screw mounts

Below there are small leaks, but there is nothing to worry about.
Repair of plastic screw mounts

Until the glue has hardened, we tear off the electrical tape around the spring. It is not necessary to do this at all, but if you also decide to do this, act until the glue has finally solidified.
Repair of plastic screw mounts

We cut the bulge from the clerical knife with a blade behind the face. This also needs to be done before the adhesive has completely cured.
Repair of plastic screw mounts

The restored sleeve looks like this:
Repair of plastic screw mounts

Repair of plastic screw mounts

Her view is certainly terrible, but what difference does it make, it is located inside the case.
Use the plastic mount only after the glue has completely dried.
As everything dried up, I assembled the dashboard panel. Experience has shown that such a recovery experience is quite viable.

Watch the video


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Comments (4)
  1. Gray
    #1 Gray Guests May 15, 2018 17:43
    2
    How much fuss! It is much easier and more reliable to glue broken dichloroethane; it dissolves and glues plastic perfectly.And if you crush plastic into dichloroethane, then even missing parts or parts can be cast from it.
    1. radar
      #2 radar Guests October 5, 2018 09:36
      1
      You can glue it with dichloroethane if debris is not lost. A longer self-tapping screw is the way out, but you still need to restore the height of the rack. If the tip is broken, and the stand is long, as in the photo. you can apply another way: we cut the rack exactly, perpendicular to the axis of the hole, measure the difference between the original and the resulting level of the rack, select a self-tapping screw longer than the native for this difference, cut out a cylinder of equal height from a suitable tube (old fountain pen, the same rack from a broken technique) measured difference. The cylinder will play the role of a high washer. Putting the case together.
      Another option: if there is such a rack from an unusable case. consisting of the same material, you can connect them both with glue, such as dichloroethane, and friction welding (inside the welded stand the centering nail, the stand into the screwdriver, we combine and twist until melting, we stud and remove the nail. It remains to cut off the excess). For durability, you can put a vinyl tube soaked in acetone over it. After drying, it will tightly squeeze the rack, and having lost plasticizers in acetone, it will become solid. You can also apply heat shrink.
    2. Sergey K
      #3 Sergey K Visitors November 19, 2018 21:35
      0
      Very rarely, such racks are made of plastic that dissolves with dichloroethane :(
  2. Guest Vladimir
    #4 Guest Vladimir Guests October 2, 2018 11:48
    0
    Well, it's easier to choose a longer self-tapping screw.

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