Building your own underwater Led

[Sdc77]

Hi guys,
For those who want a cheap, nice and efficient underwater led with pride of making it by yourself, here are mine :

I started with a foot plastic hider sheet, found in my construction shop. It's 60mm diameter, exist in black or silver :



Here is a link to get it in USA : http://www.componentforce.com/category/479/castor-cups

From UK : https://www.sinclair-rush.co.uk/product/479/CH2/order

Another kind of caster cup : https://www.amazon.com/Magic-Sliders.../dp/B000UVMOBW

Then bought 2 home leds, 12v DC, blue, with 24x SMD 5050 leds :



You can go with a 30x SMD bulb : http://www.dx.com/p/mr16-470nm-5-5w-...5#.U4ROOlKKCUk

Or with direct PCB without need of breaking anything : http://www.gearbest.com/car-lights/pp_96118.html?wid=21

Broke it to keep the PCB :



Then glue the pcb (with 1 meter wire welded) to the plastic sheet with spacers (it can be a water bottle or soda cap), to escape the stuff behind the PCB, and pour casting epoxy resin in it. You can use this resin : http://www.michaels.com/easy-cast-cl...=epoxy&start=8. 24 hours after, it's crystal clear, solid and perfectly sealed :




Black Caps : http://www.componentforce.com/category/479/castor-cups

From UK : https://www.sinclair-rush.co.uk/product/479/CH2/order

or : https://www.amazon.com/Magic-Sliders.../dp/B000UVMOBW

Blue Leds : http://www.dx.com/p/mr16-470nm-5-5w-...5#.U4ROOlKKCUk

or : http://www.gearbest.com/car-lights/pp_96118.html?wid=21

Epoxy clear casting resin : http://www.michaels.com/easy-cast-cl...=epoxy&start=8