The many elements of Runecrafting

I spent a few hours doing the run from the bank to the teleport point in the rune shop in runescape Varrock, and got over a thousand essence in my bank. Maybe not a lot for some of you players out there, but for someone who only plays 5-10 hours a week runescape gold, if that, it was the most I had ever had at once before.
I had done the Runecrafting before, enough to raise my skill to 16. Mostly doing Air, a few Mind, and some water. I had gotten a lot of talismans from killing Goblins runescape money when I first started. One of those things filling my bank space. So, how can I combine those two?
Making multi-element runes!
I have a friend who hates the multi-element runes runescape. I love them! They are best with attack spells and teleport spells. They tell you, if you look them up, that each one acts as two different runes. Which is true, a mist rune acts as both a Water rune and an Air rune. But there is more to it. You see, one thing I had not realized at first, is that each single Mist rune can replace an Air rune AND a Water rune - in the same spell! So, if I need to cast teleport to Falador, I need one Law rune, 2 Air, and 1 Mist. Less runes used up.
So, why don't more people use them? A few reasons.
First, you can create fewer of them, and they aren't offered anywhere I have found - you have to make them yourself, or buy them from someone who did runescape gold.
Second, The most you can ever make at once is 26. I don't think it ever increases, like it does with the others. As your Runecrafting level increases, you can make more of each rune. For instance, When you reach level 11, and take 28 rune essence to the Air Alter, you now get 56 Air runes. At level 22, you would get 84. But with the multi-element runes, you only ever get 26 runes at once.
Next, each time you create a multi-element rune, you lose one regular rune, one talisman, and one rune essence. I will explain that later. Also, there is no guarantee that all of the runes will combine. You are often lucky to get only half of them to, with all the rest destroyed with payment or experience. The solution to this is the Binding Necklace, created by casting level 2 enchant on an Emerald Necklace. This otherwise seemingly useless item is used only to increase the chances of creating multi-element runes.
Finally, it isn't easy to figure out how to make them. The sites I have seen try to explain it, but don't seem to do a very good job of it. Figuring it out is difficult. It can be done, but it isn't easy.
So, basically, they accumulate slower, and go just as fast, since casting a spell with them still destroys them runescape money.
So, how do you make them? Well, I will try to explain. First, you decide what elements you want to combine. I will use Air and Water, to make a Mist rune. Then, you figure out which Alter you want to go to. Air is reasonably close to Falador, and Water is equally close to the Draynor bank. I will choose to go to the Air Alter. So, wear the Air Tiara [you have gotten one, right?], and the Binding Necklace, and fill your backpack with the following:Water Talisman;26 Water runes;26 rune essence.
You walk to the Air Alter [or run if you are feeling up to it], and enter it, since you have the Air Tiara on. When you get to the Air Alter, use the Water Talisman on it, not a rune essence. The 26 essence and the 26 Water runes will disappear, and you will get 26 Mist runes.
For other element combinations, use other runes and talismans. That, however, is the short, quick explanation.
Good luck!