Painting a Samsung M9245 Microwave Interior with Rust: Suitable Paint Options

Hello!
The topic is more general than about a specific device. I have owned the equipment in question (specifically the Samsung M9245) for quite a long time. My wife came up with the idea that it needed to be replaced because there was rust inside. My comments that rust is a natural (unlike all those E-xxx) compound and its company need not harm anyone , were to no avail. Rust appeared mainly on the inside of the door.

I removed it, cleaned it (after the bottom shines almost like inox).
However, now I have a dilemma - can I paint it with any white paint, or are some special (I do not know, maybe without lead compounds, water-based, acrylic or other) indicated. I'm asking for advice from people who are active in this hardware niche (but it got smart to write ).
Pos. J.
PS.
It would be advisable in an aerosol.... .

Hello.
I personally use aerosol enamel for a bathtub or sink.

Hello
I agree that for the bathtub and sink, but the temperature is high in the microwave and then compounds that are not too healthy for us may be released. chemical compounds under the influence of heat.

These paints for the sink or bathtub are called ceramic paints. They are characterized by high temperature resistance. However, in my opinion, even if it was low resistance, the paint does not contain particles that could heat up under the influence of micro waves, such as water. Many things in the microwave are not able to heat up because they do not respond to microwaves. The manufacturer probably uses powder paints and if we fix it with the so-called ceramic paint (the cost of several zlotys) it should be fine. The topic interested me because I am also repairing mine - it had rust in the place where the circles are circling, the ones that hold the plate. I heard somewhere not to use rusty microwave ovens, but it's probably about electrical conductivity - if the housing elements are in poor contact with each other, they can't effectively create a faraday cage, and this is the housing of a microwave oven. If you delve into the subject, it turns out that greased doors also increase the harmfulness of the microwave. The microwaves themselves do not affect the organisms, but the temperature generated by them. After all, in the world around us there are a lot of different electromagnetic waves, from mobile phones to long radio waves .... A microwave oven concentrates in a small space up to 700W of the power of these microwaves, so it heats very effectively and is used for this purpose. And what radiation will escape from it? Probably negligible if everything is ok from the electrical point of view. If someone has doubts about the paint after its renovation, it can be heated in its conditions, for example, by heating something there for a long time.

Has anyone finally fixed the microwave because so far it's only unproven advice? I also noticed rust on the upper part from the inside and even a paint chip so that you can see the housing on about 1 square cm. Apparently, you can't put metal objects in the microwave, and under the varnish, it's probably the metal housing. Is powder coating really the only way that doesn't pay off on its own?

Gentlemen - I'm not an expert in the construction of magnetrons but .... someone gave information that the microwave oven is very hot inside - so I guess they mistook it for an oven. You can check if it is hot after 10 minutes of work - I assure you that it is warm at most. Someone else wrote that there is a chip on the paint ... and the manual says that metal objects must not be inserted - that's right - do not put objects in, but the housing is a structural element and nothing has changed in the construction of the microwave despite the chip. No paint is able to stop the force of the magnet and if someone invents one, please contact me - we will be very rich. Microwaves that heat the water particles contained in food do not affect the paint - unless it has some electrically conductive properties. Microwaves, on the other hand, also affect metal objects inserted into it, because currents are generated that heat these objects, causing a complete short circuit in their structure. Sometimes a plate also shoots - if it has a metallized ring around the edge ... or a metal pot also shoots .... a fork ... or a spoon ... some harder paint will definitely be suitable for painting a microfoil or chipping inside. Powder coating is not invented only for the microwave, but it is used to paint many household items because it is very durable. You can paint the paint in a spray paint for painting bathtubs - such a ceramic one.

He's also not an expert, but from what I've learned, it can be hot in one place and, for example, 1 cm further on it's cold. There's a YT video somewhere showing the microwave in action. The guest puts in the grated cheese but so that the base does not rotate and you can clearly see that the cheese has not melted evenly in every place. That is why microwaves have a rotating base thanks to which, for example, heated pizza has a chance to be heated fairly evenly:


But we still don't know how it relates to the housing, rust and paint chips.

It is worth emphasizing what was mentioned in the previous materials and is indicated in the film. High frequency causes a change in the polarization of water molecules and it is the movement of water molecules that causes its heating, nothing else heats up in the microwave and the steel elements located inside the microwave, not connected to the housing, form the form of an antenna in which the wave energy is concentrated and leads to the release of heat for the wave is a type of short circuit that does not affect the operation of the magnetron but disturbs the field inside the microwave. The most interesting are gilded plates with gilding in the form of a ring. Sparking from burning the continuity of the ring occurs in the first second of operation, the subsequent effects are even more interesting because the increasing energy in the remains of the ring causes further burnings, but the arc of sparking becomes longer and longer over time because the gold plating is degraded and so on until the ring ceases to be a radio wave receiver.

I wrote the posts in 2017 but I use the same microwave to this day - that is, 6 years since then and nothing bad happens although the chipping of the paint in the top is probably a deco bigger. I heat mostly always in a heatproof dish.