How they're done!
1. Set up your mould, fully lined. You will need to rig up a device to hold your funnel in place. Mine is 4 chopsticks tied together with bag ties! So long as it doesn't fall over whilst pouring, anything will do. For this technique I find that soaping cool to cold gives you the time to separate, colour & fragrance your batch. You can always put it on the radiator once you're done to kick start the gel.
2. Make up your soap base as normal. Stickblend enough to combine your oils & lye. You want thin trace not thick! (If it's too thick it won't flow through the funnel).
3. Split your soap batter into 2 halves, colour & fragrance each one. Again, only stir enough to combine the additives well. You do not want a thick batter. If you are adventurous you could try 3 or 4 colours.In the pic below I'm adding Titanium Dioxide powder to this half.
In the next I'm adding a green colour to the other half.
4. Ok, so now you've got 2 pots of coloured batter. Pour those into 2 jugs ready for pouring. Don't hang around whilst doing this. Have everything ready before you start.
5. Start pouring first one colour, into the funnel, then the other. The amount you pour of each colour will affect the final look, it's trial and error in this part.
The pic below shows the mould about half full, you can see how the swirls are building up.
6. Pour till all your batter is used up. And you're finished! The one I made above is called "Yo! Limey" and turned out like this...It's fun, no 2 bars look the same. For those like me who are swirly challenged, give it a try!