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In this video we will find out how well nail polish, silicone and potting compound can waterproof electronics and how well they can handle heat transfer. Along the way I will show you how to apply those coating materials and what is important to remember when utilizing them.

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Ecstatic Wave, Jens Kiilstofte


20 thoughts on “How to Waterproof Electronics || Nail Polish, Silicone, Potting Compound

  1. Is this potting compund Polyester resin?…If not, coud I replace it for a catalyzed mix of Resin + Styrene + Cobalt? (Since it is the only cheap and good option I have in the place I live. )

  2. Yes,excellent,excellent and excellent of electricity experiment and never knew it before and for funny and for learning and for reviewing,it is definitely a excellent way to know about science of electricity,chemistry and universal.

  3. Try CorrosionX or a conformal coating compound. Both do a decent job of protecting electronics without adding bulk or significantly affecting heat transfer properties.

  4. I've had quite a lot of experience with sealing electronics for commercial purposes. I'll start by saying that it is considerably more complicated than your video showed.
    A couple of comments.
    – there are many different types of potting compounds. The one you used seems to be quite hard. Most are a little bit softer. The hard ones can actually rip SMD parts off the circuit board.
    – Testing is also quite complicated and extensive. Far more so than just submerging it in water. Typically what causes problems is temperature cycling. Stress testing.
    – The other problem tends to be where anything touches the potting. Maintaining that bond is tough. So where wires exit the material is a source of water ingress.
    – Another big problem is the potting material separating from the enclosure. The enclosure needs to be very clean, and if a plastic enclosure is used then you have to make sure the manufacturer didn't use any mood release or any regrind. Both will cause the potting to separate from the enclosure. And if the PCB is touching the enclosure, which is almost always, water will find that spot and damage the PCB.
    – There are also commercially available PCB coating materials that do a much better job than nail polish. That said, those types of products are primarily used for water resistance, not water proofing. More for keeping the humidity in the air from damaging the parts. If you are looking to waterproof, both will eventually breakdown.

    But if you are just looking for something to work for a home project, I would go with an epoxy.

  5. You really have strange accent…what do you eat please while you're speaking..? I would like to have a real strange non english accent too….to impress my friends pakistanese…really.!!

  6. What if you just hot glued the openings where the wires came out of the esc to close off all the places water got in? I feel like it would let heat out a lot better and be easier to do

  7. If I was going to use that ESC and motor in one of my RC airplanes, I would not coat them with the amount of silicone or epoxy that you applied for reasons of weight. Grams count when flying a RC model. The nail polish is a possibility though. RC planes depend on airflow for cooling and it seems you are running yours at half throttle (1500ms). Most setups are for 1000ms at zero throttle and 2000ms at full throttle. I would be worried about flying something coated with a blanket that prevented the airflow from cooling it while I was at full throttle for much of the flight. Just my thoughts from an airplane modelers POV.

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