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If I'm a bit careless with words(there's brazing and welding too), solder is usually about joining two metal pieces together by adding a 3rd molten metal with a lower melting point where the pieces meet.
Some plastics also melt in heat, and can be used to join pieces of plastic together in a method very similar to soldering metal. It's usually done with a hot air gun with a pointy nozzle.
All types of soldering releases fumes, which are unpleasant if not outright toxic. All soldering should be done in a well-ventilated area. If you are doing lots of it, you should have a dedicated ventilation inlet righ by your work area.
Answer
By "solder" I'm presuming you mean to join using melted metal, typically for electrical conductivity (as in soldering components on a circuit board).
Since plastics, as a rule, do not conduct electricity; I'm going to guess you mean you want to solder some metal items to each other, perhaps on or through a piece of plastic.
Soldering typically involves high heat (on the order of 800 degrees Fahrenheit or more); most plastics melt or burn at such temperatures; and many plastics produce chemical fumes when heated, melted, or burned, some of which are toxic.
Another hazard of this is that molten plastic can cause serious burns on exposed skin, much like getting melted sugar on it.
I'd suggest against doing this unless you have a good reason, and do so in a well ventilated environment and protect yourself against burns if you do.
No, it is not safe to burn plastic in an oven as it can release toxic fumes that are harmful to health and the environment.
No, because you'll be melting plastic, and melting plastic does create toxic fumes.
It is not safe to melt plastic bottles at home due to the release of toxic fumes. It is recommended to recycle plastic bottles instead.
Plastic, solder, and resistors.
Normally you will solder it or you can use hammers and nails or even screws.
Yes, polyethylene plastic is generally considered safe for storing food. It is non-toxic, resistant to moisture and chemicals, and does not leach harmful substances into food. However, always check that the plastic is labeled as food-safe and follow any guidelines for safe use and storage.
No, burning plastic bottles is not safe or effective. When burned, plastic releases toxic fumes and chemicals that can harm the environment and human health. It is best to recycle plastic bottles instead of burning them.
Toxic components used in the production of computers include lead in solder, mercury in some types of monitors, and brominated flame retardants in plastic components. These substances can be harmful to both human health and the environment if not properly handled during manufacturing and disposal.
By burning plastic, the gases are toxic and poisonous.
Not if its non toxic plastic
Smoke or gas let off by a melted plastic spoon is toxic and should be avoided. The cooled plastic can be disposed of in the trash in a normal way.
For copper pipe, lead-free solder is recommended to ensure safe and effective connections.