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Before I started my first reroot job I had a close look at the various
techniques and also had a look inside some factory rooted heads.
The most commonly mentioned technique (pulling a plug of hair through the head, tying a knot in the end of the plug, securing the knot with a spot of glue, let it cure and pull the plug back until the knot hits the inside of the head) sounded rather tedious and time consuming to me (due to the glue that needs curing). Besides, I like to do things in a way that is easy to undo so that rules out using glue inside a head.
I decided to base my method on pulling folded plugs into the head.
One thing I noticed at both the Hinatanao website and by looking inside a ZC head is that the looped plugs can be secured simply by threading the loop of next plug through the loop of the previous one. That way only the final two plugs in a row need to be secured by tying a piece of thread (dental floss or thick thread) through both loops.
Instead of a needle and a thread to pull the hair through the head I decided to use folded pieces of metal wire (mine is 0.05mm thick steel).
The metal wire is stiff enough to poke through the holes in the head but can be bent and shaped, which is the only way I could think of to reach the hole in the neck from the lowest roots in back of the head.
I do use an old needle to widen some of the holes before trying to poke both ends of the metal wire through.
The method I use has some pro and cons:
Pro: Requires very little space inside the head; each plug remains firmly in place as long as its preceding plug is in place, so only the final plug in a row needs to be tied down.
Con: The split needle will collect any stray hairs crossing its path inside the head, these hairs will be pulled loose when you pull the needle out of the neck hole, ideally you want to pull those hairs back into their original position, otherwise you run the risk of pulling out an entire plug, thereby unlocking the other plugs.
This makes rooting lots of small holes that are close together (such as a parting line) troublesome.
The (now defunct) Brutal Sun Studio website shows a better way to execute this method, a variation on the anchor thread method with using some loose pieces of thread (or dental floss wire) instead of a permanent thread inside the head.
The only thing I would change is using a needle out of folded wire and use it to pick up the thread only, then thread the plug through the loop of the thread, rather than pulling the entire plug through the head.
This way even a parting line can be done without problems.
I have yet to redo the pictures below, so these show the old method I used.
The first plug of hair is about to go in. I decided
to follow the original spiralling rooting pattern, so I can thread the
loop of each new
plug through the loop of the previous one until I'm done.
The second plug of hair is about to go in. Note that I use two 'wire needles': I keep the first one around the loop of hair until I've threaded the next plug of hair through. That way I'm certain all hairs in the plug are secured.
Note that the loop of the first plug is sticking out of the neck hole, once I've threaded the loop of the second plug through the loop of the first one, I slide the 'wire needle' off of the loop of the first plug and pull the plug into the head whilst leaving the second one sticking out.
(A couple of hours later...) I've reached the back of the head, note that the 'wire needle' is curved all the way through the neck hole. Also note what a nice wide eye a 'wire needle' can provide !
This can happen in a couple of ways: pulling the needle out of the head whilst pulling the latest plug of hair back, or finding that the previous loop wasn't looped around the latest one.
In any case here's a way to fix things:
Pick the plug before the loose one, insert the wire-needle (open end first) through the plug into the head. With a little luck the needle pick up (most of) the hairs of the plug and the loop of the plug that was looped around it. Carefully push the needle into the head and guide the tips towards the neck hole. Check if the plugs move into the head also. When the tips of the needle are sticking out of the neck hole, check if the plug before it is still secured by pulling it. If you pull it out of the head, remove the needle and insert it through the plug before the one that got pulled out. Insert a second wire needle into the empty hole next to it,