A while back, I saw a couple of YouTube videos and a Tumblr post about how acrylic yarn can be used to make customized doll hair for plastic dolls (such as Barbies or Monster High dolls).
I’m also been looking into acrylic fiber, and it seems like yarn can be brushed out to get fiber for needle felting.
And then this crazy idea popped into my head: perhaps there’s a way to combine the two, such that you could make yarn hair for needle felted dolls?
I didn’t entertain the idea that much. Until now. I recently went to a community swap recently and managed to obtain a fist-sized ball of red acrylic yarn. And let’s just say a certain needle felted doll modeled after a certain red-headed fish lady has now become my first victim subject for this experiment.
Yeah, I was daring enough to try and redo Undyne’s hair with acrylic yarn.
So, I started off with making a long hair weft with yarn...
I measured a piece of yarn around Undyne’s original hairline and added 2 inches extra to get one long string.
I then cut out several smaller pieces of yarn 2x the length of hair I wanted and tied it to the longer yarn string, until I got my desired weft length.
Big mistake: I thought I could get away with just brushing the yarn out with a doll brush, but that wasn’t working. I had to detangle the yarn strands here by hand. The brushing worked better after manually detangling.
Speaking of which, I knew that brushing causes some fiber to be pulled out. But I had no idea how much leftover fiber I would get.
..... Yeah that’s a lot of fiber.....
Anyway, here’s what happened after I finished brushing.
The result was rather frizzy, and the strands retained some curl to them. Not that this was a bad thing - I could imagine making something like this in the future if I plan on ever making curly-haired or frizzy-haired characters - but, for my experiment, I needed the hair mostly straight. So I dunked the weft under some hot tap water and began brushing out the yarn some more, which got rid of most of the curl.
It looked pretty good at this point so far.
Now, typically, if making this for a plastic doll, the hair strands would be put through a straightening iron set at low heat to make it shiny; however, since I’m making this for a needlefelted doll, I just kept it as is at this point.
Now, for the moment of truth: Could I needle felt this weft?
I carefully pulled off the original hair from Undyne’s head. I prepared my needles to stab the weft onto the back of her head. And...
Well, okay that’s kind of a lie. The acrylic weft did felt into the head, but the connection was really weak and could be dislodged easily even with gentle handling. :(
My guess is that the weft was pretty bulky from the start, and it’s overall design made it difficult for fiber to penetrate into the head. I could see the possibility of felting on loose hair strands instead of a long weft. Or, maybe tying yarn onto sewing string so the weft isn’t too bulky and the fiber could dig deeper more easily.
There was also the possibility that dunking the weft under hot water caused some of the acrylic fibers to straighten, making the fibers less rough and less likely to felt.
I also have to consider the fact that Undyne is made of polyester that has been felted over a foam core. So there is also the possibility that the acrylic fiber isn’t sticking too well into the foam core. Maybe the yarn hair requires a felted core in order to stick properly.
So, yeah. Kind of a fail. But not completely.
I was getting pretty impatient at this point, though. Making the weft was a very time-consuming process (that’s why my pics are taken over a laptop, I was watching YouTube videos the entire time). I didn’t feel like cutting the hair from the weft to felt into the head. I proceeded to sew the weft on to the head instead.
That hair was super unmanageable, though. Particularly the hair fringe.
A common trick used for treating Barbie doll hair that has gone frizzy is to dunk the hair into boiling water. I did the same thing here. I pulled the hair into a ponytail and dunked the ponytail and hair fringe into near-boiling water (basically just heated some water in the microwave) and began to style the hair with a doll comb while it was still hot.
Undyne’s hair looks way better now. :)