I am webmaster of that site, so perhaps I can help you out a little more:
The formula for making gel candles is:
95% White Mineral Oil 375* Degrees F Flash Point 200 Viscosity
5% CP9000 Thermoplastic Resin Powder
Mix Oil and Resin together and allow to stand for 20 minutes at room
temperature. Begin heating slowly to 200* degrees F. Cook at 200F for 1 hour
or until all lumps have dissolved, stirring as needed. (Never exceed 230*F.)
Add fragrance and color if desired and pour.
This you can find on the front page of the http://www.formulas4u.com site.
Other things you might want to consider:
Bubbles or no bubbles: Gel candles will have bubbles if poured at a lower
temp. Allow to cool to around 200 degrees for a few bubbles. 170 for the
most bubbles, but no cooler or you will have problems pouring.
Embedding objects: Gel is great for embedding objects, but make sure you
put a little mineral oil on the objects before pouring the gel over them.
Just a light coating. Coating the objects with oil prevents clouding just
around the objects.
Adding scents and colors: Make sure that you buy a true oil-based scent or
color. Other kinds can cause the candles to cloud.
Be creative: gel candlemaking opens up a lot of great projects. Many
makers use them to make candles that look like champagne, soda or beer in
glasses. Others pour them in small fishbowls with sand and shells in the
bottom, to creat small underwater worlds. Gel can also be layered.
If you get stuck or have a lot more questions, we run two discussion boards
The one on the formulas4u site is very focused on the mechanics of gel
The other is more free-form candlemaking discussion.
Hope this helps...