Rekatkan kembali bagian yang rusak dengan lem. Panaskan solder. Gunakan solder untuk melelehkan pinggiran plastik. Tambal lubang besar dengan plastik bekas. Haluskan bagian sambungan dengan ampelas untuk menyamarkannya.

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Start by reconnecting the separated surfaces and anchoring them with a powerful plastic adhesive. You’ll need to have both hands free to safely operate the tools you’ll be using to seal up the damage.  Use just enough glue to hold the pieces together. It’s possible for the heat from the soldering iron to react with certain types of adhesive and cause discoloration. When you’re dealing with a crack, split, or clean break, melting down the plastic may be the only way to rejoin it. Switch on the soldering iron and set it to the lowest temperature setting. You can begin getting your other components ready while the heating element warms the iron. This process may take several minutes.  Don’t set your soldering iron higher than about 400–500 °F (204–260 °C). Fusing plastics doesn’t require nearly as much heat as fusing metals. Before you get started, clean the tip of the iron with a damp sponge to remove any residue from past projects. Rake the tip of the iron lightly over the joint where the two surfaces connect. The intense heat will instantly liquefy the soft plastic on either side, which will then merge together and reharden. The result is a connection that's much more durable than glue.  Whenever possible, solder the pieces together along the backside so that the resulting seam will be less visible from the front. For your own safety, always don protective eyewear while operating a soldering iron. It’s also a good idea to wear a respirator or breathing mask and work in a well-ventilated area to avoid inhaling noxious fumes from the plastic. If there’s a whole section missing from the item you’re trying to repair, see if you can dig up a replacement piece with a similar color, texture, and thickness. You’ll fuse the patch the same way you would a normal crack—run the tip of the soldering iron along the edges of the new piece until it melts into the larger surface. Ideally, the scrap piece should be the same type of plastic as the rest of the item. However, you should be able to fuse mismatched plastics...