How to seal Electric Paint
Learn how to seal Electric Paint
Electric Paint is a water-based paint, which means that it is easy to wash off, but also can be prone to smudging – even when it’s dry. By sealing the paint, you will protect your design and make it smudge-proof. For this, you need acrylic varnish and some masking tape.
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Prepare your paint
Before you seal your paint, make sure that the paint has fully dried and it’s working as expected.
The varnish covers the surface of the Electric Paint and makes it non-conductive. The paint is still conductive underneath the varnish, but you aren’t able to connect any crocodile clips or cold solder to the paint. Therefore you need to exclude or cover any area where you want to connect to the sensor later. You can do this with a bit of masking tape.
Spray varnish over paint
With the connection area covered, coat the Electric Paint with an acrylic varnish.
Leave the varnish to dry and then check if you have covered the sensor completely by touching the paint with a wet finger. If any paint comes off on your finger, coat the paint with some more varnish. Once it’s fully sealed, you can remove the cover and connect your sensor to your board.
This varnish works well on paper and on wood, so you can use this sealing method for any wall installations that you’ve created with Electric Paint. If the paint has a connection to the back of the wall, you can completely cover the front of your design with varnish.
Alternatively, you can also use our Printed Sensors. They come already sealed and have multiple access nodes for connections. As they can be cut to different shapes and sizes, they are great for quick prototyping and proximity sensing.