Step 5: Pouring

When pouring the liquid in, be careful (gloves alert) it's very hot and will probably burn you. I can't confirm this as I've never been stupid enough to pour it on myself, but safety first!

You only need to pour to the level you wish the LED to be fixated at. If you just dropped it in, it would sink to the bottom which in this case is the top of the soap, looking rubbish. Leave to set hard before placing the LED on top.

If you want to, you could add colouring to this project and have two different colours. I prefer transparent though. Don't use food dye - it stains.

If you've heated the soap too high it will get bubbles in the mix - avoid at all costs. If like me you get this, you can explain that like normal hearts it is not pure red, but has layers of white fat to protect and encase the electrical nerve impulses... (yeah...)

Here's a thought for a new idea. Instead of using the flashing LED, buy one of those musical greeting cards. I would suggest buying a romantic one. Then cut the small musical electronic circuit out of the card. Attach a magnet and reed switch as mentioned above to turn the romantic music on and off when you pick up the heart out of the soap dish.
Wet lithium battery? Explain the dangers, please. I really would like to know. =D<br/>
have you ever added lithium to water? as in the pure metal. if not, search on YouTube for it! hopefully that'll help you understand.
Oh, now I remember. lol.
you gave me one of them now and i would take it outside and smash it up im going through a hard time !!!!
To get rid of the bubbles simply spray the top with surgical spirits (rubbing alcohol in the US) immediately after pouring the soap - it reduces the surface tension of the soap and gets rid of most bubbles. I am currently writing a 'melt and pour soap' instructable - flashing lights aren't the only thing you can put in soap, but probably one of the most original! Mind if I link to this instructable?
bit late, but go ahead!
hehe! I was about to quote your tutorial. ;)
go for it
How about a not-flat-on-the-bottom version? Pour in 2 layers like in the instrucable, but have the 1st layer almost to the top of the mold, let harden, then add the LED and more soap to the top of the mold - the LED should stick out of the top about half its height. Let harden again. Remove from the mold. Now, turn this first side over to place it flat side down into the mold and mark or remember where its level is - how far down into the mold it goes before the mold slant is too small for it to sink further. Pour a new soap layer in 'til it's at the level mark from the first side, place the first side, flat side down, onto the still-liquid soap and let dry/harden. This should make a soap that is a rounded heart shape on top and bottom.
great tutorial.. thank you so much! I'll have to try this :)
I made one with a reed switch inside and stuck a magnet under the soap dish, so that the soap was only lit when it was picked up.
yeah we've been experimenting with different methods to get it to light up so that it can be switched off. A reed switch was one, but we're experimenting with a few others too ;-)
a reed switch is perfect. there really is no better way. a reed switch can be hidden away and the soap can be used, any other type of switch would cause possible shock and wouldnt allow it to be used.
Congrats!!! Really that is very cool project. Also how about to make vibrating soup?
I have a flashing LED in my pocket which whilst very much dimmer is still flashing after three weeks. (hope that answers some questions)
Here's the answer to 'what? LED? Single flashing?' <br/><a rel="nofollow" href="http://www.ballumination.com">http://www.ballumination.com</a><br/>less than $2 <br/>No, I don't work for them and not trying to spam anyone - sorry if this is poor form. Trying to help...;)<br/>
I like this concept! Nice and simple use of LED, which is good for me because I'm not electronically gifted in the least. Only problem is I don't have a mold and don't feel like buying one. Hmmmm, could I make one? Sure why not?
Ooh, neat! I'm going to try to make some, too. Thanks. : )
Well to be honest the idea of the soap is to be used (prolly 10 full body washes) - it'll only take a few washes and the soap itself will only last two weeks at most imho. The battery will last longer than the average throwie (which usually last two weeks) because it is flashing rather than being on all the time. You may get as much as a month. By then I'm sure you won't be worrying about how long the light will last! You'd need a waterproof switch which aren't very small afaik and probably a resistor if you're going that way. I'm working on simplicity. Make it a day or so before valentines and you'll be fine whatever happens.
cool thanks nice job great instructable
just one doubt, Will be the LED always turned on?
How long does the battery last? Too bad you can't turn it off so the light would last longer.
Anyother way of waterproofing is to use aryldite - mix up the resin and dip in - coating it totally. That'll make sure it never gets exposed!
Well done! Excellent photos. Sure to impress many a sweetheart this Feb.
This is a perfect Valentine's Day present! It's also a great mashup, and a great example of how to use Instructables.
man this is great to bad i dont have a glue gun... or a single flashing LED... or soap... or a lithium battery... or a mould... oh well i realy like it my fave valentines instructables yet
ill be making 2 of them for my love this valentines day thank you so much :) great instructable

About This Instructable




Bio: Hi, I'm Tim. I work on the railways during the day, run a scout troop and have a blog (see above website link) where ... More »
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