BJD Thigh Modifications, Pt. 3 Widening String Slots

April 7th, 2009
by misa1

For this third post about BJD thigh modifications, I’m going to share a small mod I made to the existing suwarrico joints on my Volks Yo-SD Hinaichigo.

Broken record alert: One more time, please work in a ventilated area, and wear a mask or respirator to prevent inhalation of resin dust.

Whether suwarrico cuts are included from the manufacturer, or added by a doll’s owner, posing a doll the surwarrico sitting position sometimes takes a little fiddling. It usually takes a second or two to feel that “catch”, when the strings slide from the vertical slot into the horizontal one, allowing the leg to rotate. Depending on the size and smoothness of the cuts, this can be made trickier if the doll is wearing a bulky costume. Last spring, I purchased a Volks Yo-SD Hinaichigo on the secondary market. Modeled after the Rozen Maiden character, Hinaichigo is a BJD of the tooth-achingly cute variety. I’m not usually one to keep full set dolls in the their default costumes, but Hinaichigo just looks so darn right in her pink velvet, and white ruffled ensemble. The only problem I encountered was that the combination of her opaque white tights, and her gathered bloomers, made it difficult to maneuver her legs. Add to this, the fact that her thigh slots and suwarrico cuts were very narrow. The elastic cords in each leg had a habit of getting stuck, side by side, in the slot. This prevented the leg from bending properly, without some gentle wiggling. In simple costumes like short dresses or thin pants, this was no problem. In a more complex outfit, trying to wiggle and adjust each leg every time I wanted her to sit, soon became tedious.

Hinaichigo’s fix was simpler than adding a suwarrico cut from scratch, as I’d done with Maebe, my MSD Hisui. The cuts were already there. They simply needed to be widened. Below is a picture of Hinaichigo’s joints, prior to any work. In the below photo, also note the thickness of the resin surrounding the channel (more clearly seen on the right leg). One of my favorite things about Volks dolls in general is their heavy, thick resin. In this case, that thick resin on the corner of the suwarrico was snagging the cords.

The first thing I did was to use the burr attachment of my rotary tool to follow the walls of the existing slots. Applying gentle pressure to first one side, then the other, I widened the area through which the strings have to travel. After this, I turned my attention to the corner of the suwarrico cut. I first removed the point, creating more of a curved path. I then tilted the rotary tool about 45 degrees, to take off some of the inside thickness of the resin. This part requires some care. You need to take your time, and use caution that you don’t scrape too much of the surrounding plastic. The next photo shows the completed right leg, compared to the left which has not been worked on yet.

Finally, as I didn’t want to have to revisit this project, I took one more measure to insure smooth string movement. I sanded a tiny amount off of the top of the thigh joint. There was originally a sharp corner there, and rounding it slightly helped eliminate one more place where the doll’s strings could get hung up.

This work on her thigh joints has made my Hinaichigo much easier to sit and pose, especially in her default costume!

Thanks for reading, and I hope if you ever have joint issues with one of your resin gang, something here might give you an idea of how to fix the problem!