Easy Waterproofing Electronics





Introduction: Easy Waterproofing Electronics

About: Hi my name is Steve and i'm a Creative and I got Technical skills i can build anything just stick to my account . I'm a YouTuber so you also can see my all videos here https://www.youtube.com/SteveWillsonKujur

Hey! everyone My name is Steve 19 year old from India .

Today i'm going to show yo how to waterproof you pcb board .

Click Here to See The Video

Step 1: What You Need

  • Hot Glue Gun
  • Heat Shrink Tube

Get A Hot Glue Gun Cheapest click

Step 2: What You Need to Do

Just Follow the Step

  • cover all the surface with Hot Glue
  • Cover The Board with Heat Shrink Tube
  • USE a Lighter to Shrink The Tube

Step 3: You Are Done Now

  • After finishing It will look Something Like This

Click Here to See The Video



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    25 Discussions

    good one, I did something similar to my HEATING up resistor! :P I realize what you did and why. people are so much worried about heat same as they got worried about grounding in wiring, which is alien concept in asia :P so rock on. Although do give attention to things pointed out but take too much pressure. With love from Pakistan

    1 reply

    * but dont take too much pressure

    You can do better by covering the board in an epoxy. You can do a thin coat so it will still get rid of heat, but will still be water tight. I do this for my flash drives that I steampunk. https://www.instructables.com/id/How-to-make-a-steampunk-USB-flash-drive/

    6 replies

    I keep 2 part epoxy on hand at all times. For small uses like this it really should be the same small cost. The epoxy is not going to be affected by heat from the electronics while the hot glue is. Worst case the hot glue melts & you damage the board you are trying to protect, due to heat or the water you are trying to protect it from. I have tried this method before switching to the epoxy for this very reason.

    this fear for heat up electronics felt like Y2K bug, remember those, got fixed by simple update. this image is not of something getting hot, and if someone is trying to waterproof electronics thats giving out that much wattage, perhaps he does need to learn by hard way :P

    I use clear 2 part epoxy on my pen drives, coat them then stick the case back on..man are they protected after that


    1 year ago

    Clear nail polish or silicone would also be good, i usually put silicone or nail polish and then put some heat shrink or pvc shrink on it

    There's a product called "Liquid Tape", its meant as electrical tape, but would be great for this type of a purpose, components/situation permitting. I've used it to fix frayed cables as well as reattach (glue together) really thin/tiny wires where proximity to other plastics/etc make soldering not an option.

    Come on guys.

    You don't need to put him down like that!!

    While i do agree that this method is not a good idea in ALL situations. (especially if the boards are to be used somewhere hot)

    I have done this many times myself:-)

    One warning though!

    Don't do this if you want to place the board outside. The shrink tube/hot glue combination will NOT survive the constant temperature changes combined with rain..
    I learned that the hard way!

    In this case, you should use caulk (silicone rubber) instead of hot glue.

    Thanks for the instructable Steve. And keep it coming!!

    Best regards
    Bo Holbo

    2 replies

    I am not trying to bring anyone down, I just think there are better ways of doing this. I also have used this method in the past & have seen that is not for every occasion.

    I think the biggest thing is he seems to not want to believe others about how much his board should heat up. All electronics will produce heat, some lots more than others. If this works for this board great, but it will not work for all.

    Good thinking, nice job, something I will keep in mind, I have been considering WPing an old metal detector for underwater use. Sounds like a good place to start, thanks. Semper Fi

    1 reply

    I use clear nail polish, or the fast dry minwax polyurethane in the spray paint can (stuff they use to protect hardwood floors)
    Apply a coat, let it dry, then maybe 2-3 more coats and voila...instant conformal coating and no need to heatshrink or use hot glue

    I think you will get in trouble by this because of board heating.

    2 replies

    no it doesn't... everything which can heat up on a board, won't be able to dissipate that heat anymore... you'll break your electronics...