Looking for a 'gun' that can seal 2 thin surfaces?? Help!

Hi all,

It's my first time on here, its fairly obvious from my subject header I nothing about DIY tools, so I hope some readers can help. :-)

I am trying to find a tool or device that will eliminate the need for needle and thread (and I don't mean a sewing machine!).

I am assembling hair extensions from wafts of hair that need 'snap clips' attached. Basically, these small clips contain tiny holes through which a small needle just about fits. They are supposed to be sewn on to the seam across the top of the hair waft. You can see a small photo of the clips here:

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(The actual length of the clips are about 2cm, to give you an idea of the proportion.)

The usual method is by needle and thread, where a 'simple' stitch ties the clip and hair waft together: a thread is pulled through the clip hole, and then through the hair waft's seam. The thread is then directed back over the tops of both items to do the same thing again several times, forming a small loop which is then sealed off like a basic knot.

However, the tiny diameter of the clip holes and the thin seam on the hair waft means I can only manage to thread it through 2 or 3 times, (and even this is a struggle) before I cut off the badly-made knot. In addition, all the meddling ends up getting the hair tangled with the thread.

I am trying to find a tool that could seal both things together via a different method. I am thinking there must be something equivalent to a 'staple gun', only smaller (the guns used in ear-piercing also spring to mind). The key difference is that whatever 'bridge' connects the 2 pieces together would have to be much narrower, no more than a few mm. I suppose I am really after some kind of "micro-stapler" - where a tiny pin connects both items, and that 'pin' ends up with some sort of flat barrier at each end to prevent it slipping out. The side-view would look something like this 'model':

|-x-y-|

.. where x and y are the clip and waft, and each '|' on either side would be these 'barriers', sort of like tiny drawing pin heads.

I have just spent the last hour trailing through the B&Q website, but have no idea what I am actually looking for. It seems I have to already know what I am looking for first!

Any suggestions would be very appreciated!