Step 3: Make the LED insert

The first thing to do is solder a wire to the positive side of the Lily Pad LED board and bend it over the side so it will make contact with the side of the watch battery. You want to leave this a bit long so it will extend just beyond the bottom of the battery so you can adjust it later. Fill in the hole on the negative side of the LED board. You want a small dome to appear on the underside of the board- this will make sure it comes in contact with the top of the battery.

Now you need to make a holder for the LED and watch battery. You could carve it from plastic sheet or rod but since I wanted to make more than one I elected to carve a wax pattern and then cast duplicates in a rubber mold. The process for this is identical to how I cast my other resin Green Lantern rings so definitely read through that instructable. One tip I will make is that thin castings take longer to cure and can be more difficult to cast than thick castings. To get good quality castings I first heat the mold in a microwave for one minute on high and then I mix the resin for thirty seconds before pouring it into the mold. Once you have poured the resin let it sit in the mold for ten minutes before removing the casting from the mold. Using this method I get near perfect castings every time.

I stared by cutting a round disc approximately 14mm in diameter and checked the fit of that with the large hole in my ring. Then I carved an opening for the Lily Pad LED board, allowing a bit of room for the contact wire. The holder is designed so the watch battery will snap into place so it takes a bit of trial and error to get a good fit- I made a small ledge on opposite sides of the holder that help hold the battery in place. You really want to make the battery holder as thin as possible- there is very little room to work with in this ring so keeping the height down is important.

There are two notches in the side of the casting- the larger one is so you can slide a small flat bladed screwdriver in the holder to remove the battery and the other small notch is so you can make adjustments to the wire that runs along the side of the battery. If you bend the wire inward it will put a bit of tension on the battery to help hold it in place and make sure you're getting a good contact.

The LED board is held in place in the holder using a small piece of Kapton tape. This also covers the positive contact on the underside of the board so you don't short out the battery. You can use any kind of thin tape you like- thin mylar packing tape would also probably work just fine.

For those of you not wanting to go to all the trouble of making the LED insert they are now available from my friend on his Facebook page here- http://www.facebook.com/batjeepster.rings?sk=wall&filter=2#!/photo.php?fbid=10150256885538462&set=a.495535658461.270748.289792643461&type=1&theater

<p>Could you actually make a tutorial on how to carve from plastic sheet or rod? Wax and resin definitely isn't very practical for most people and the tutorial doesn't really elaborate on sheet/rod crafting.</p>
Hello I am a huge Dc fan as I've read below from about a year ago you where not moding rings due to heavy workload. I completely understand but hope you might have the opportunity to do one. I can by the ring separate. And send it to you. However I do understand the amount of tasks and difficulty you must take on with your own projects if you are not able to. thank you
Unfortunately I just can't take on any more work right now- hope you understand!
<p>nice .though I prefer to make one out of cardboard</p>
<p>... Well, at least you can make design by yourself and make a ring prompt by you.</p>
Tel me how you made that
Have you read the instructable?
This looks remarking similar to the following ring. <br>http://www.amazon.com/Green-Lantern-Movie-Exclusive-Keychain/dp/B0052WWSJM/ref=pd_sbs_a_3 <br> <br>Ring looks truly awesome, well done.
That ring looks the same because it is the same ring. :) The instructable is about how to modify that ring and make it light up.
Honus, this is awesome!!! I have a ring!!! Can you please mod it for me? How much will it be?
Sorry but I'm not modding rings for anyone- the mold I made for the inserts finally self destructed and I'm already backlogged with too many other projects!<br>
can I buy one plz!!!!!!!!!!!!!!!! I can afford anywhere from $20.00-$30.00 <br>You can message me for where to send it if u have time. Plz!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Thanks so much! I am a huge green lanern fan. I really dont have the resources to complete the tutorial. Is it posibile that I can send you my ring.
Sorry but I'm not taking on any additional work right now- I have a huge backlog of work to catch up on!
Thank you anyway. I will try to complete it on my own. Again I want to thank you for make this tutorial.
Brilliant! Great 'ible!!!
And how much are you selling them for...Just say'n..
I'm not selling the rings. The LED inserts are available from Batjeepster- there's a link on the insert page (Step 3.)
Oh, I figured as such. It was really just a way of complementing the ring. They are very cool and just a bit beyond my capabilities. You could sell them, I bet. (And I'd buy one for my son....and one for me.)
I'm glad you like it! The reason I said I'm not selling them is that I don't have the rings on hand- they are getting hard to find too. If you can get a ring I'll be happy to mod it for you- just message me. <br> <br>My oldest son wants one too. :)
That's an incredibly sweet offer. Thank you. I might just have to take you up on it! I'll let you know.<br><br>Best.<br>Gary
After you cut and sanded the center gem how did you polish it?
I used a tripoli polishing compound and a small polishing wheel. Most any plastic polishing compound should work.
Ok. Thanks.
Love the ring!
That looks so awesome, Honus! BTW, you're my soul subscribee! :D Nice to see another great 'ible!
Thanks so much! I've got some really good stuff in the works too... :)
I'm looking forward to it! :D

About This Instructable


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Bio: I'm a former bicycle industry designer turned professional jeweler. I like working with my hands and am happiest when I'm in the shop ... More »
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