Step 5: Polishing

Rub the facets against the lapping block to work out the scratches left by the shaping process. A little oil or polishing rouge may help here. If you shaped with a good file or fine sandpaper this should go fairly fast. if you shaped with course sandpaper it may take longer. If your experiments find a better method for this, please drop a comment.
I file down the ends of my LED's depending on how diffused or focused I want the beams. I bought a load of clear LEDs and I wanted to illuminate a picture from behind so I filed it down to make it as diffused and spread out.<br /> <br /> good instructable :)<br />
Great idea, btw.
A very easy way to polish plastic is to <em>quickly</em> brush over it with a butane/propane torch. You will have a glossy smooth surface in an instant as long as you don't have any deep scratches.<br/>
I am wondering if anyone has experimented to find the refractive index of the plastic. In actual gems their refractive index is used to determine the best angle for the facets (flat surfaces.)
I had been wondering if this could be done. Now I know. Brilliant (pun intended)! How thick is the plastic surrounding the cup? Is the cup encased in solid plastic, or is the plastic really a hollow dome covering the cup?
In the common low power LED, such as used here, it's solid plastic all the way down to the active components. You don't want to shave it too close, but I found several mm of margin to work with. High power LEDs commonly use a thin dome over a filler, and can't be modified the same way.
great idea! i was thinking of something similar just yesterday involving backlighting fake gems, but just grinding the led makes so much more sense! another backligting idea i had was crinkling up transparent clored plastic for a splotchy "tie dye" sort of pattern. the cool thing about your tech though is you can create random. non geometric patterns. thanks for the great idea!
Nice... I had plans to make a ring for Christmas using a blue 10mm LED as a diamond but I didn't know what the best way to shape it would be, so I never made the dang thing (but still got the large LED :P ) Good job :)
good one. if possible compare ur moded LED with normal one.so that we will know the difference better.
At first I didn't get this, but then I looked over it again, and this is cool! It looks all sharp and stuff, exactly like a gem. I might try this, stuff will look awesome like this, nice job!

About This Instructable




More by hanelyp:Origami Angel, original design. Make a Faceted LED Gem 
Add instructable to: