Froggy: The 3D printed ball-jointed frog doll

Here is my first ball-jointed doll.  I have always been fascinated by these but shocked at the prices they command. When the excellent Sonia Verdu uploaded her beautiful Robotica, it inspired me to make my own doll for 3D printing. Whilst Froggy is not a derivation of any of her work, I should give Sonia credit, because if I hadn't had her work to refer to, it would have taken much longer to design this frog.
I made a prototype of Froggy back in February and took two prints to MRRF, where he generally got a positive response. After MRRF, I went to stay with my cousin and his family in Chicago for a few days, where my two "nieces" gave me detailed feedback on what they would change.

I returned home and left Froggy alone whilst I worked on other projects but I eventually returned to him and decided to add in the following features:

1) People will try to pose a doll like a human if it looks even slightly human. The original froggy was designed to move like a frog, so I humanised his proportions and movements. He can sit up and stand by himself. His head twists and is angled like a person's.

2) My mum suggested movable eyes, so I thought I'd see if I could do this. Hooray! I could.

3) He has jointed and posable fingers. Sometimes I just like making things difficult for myself:-)

Unlike my other models, some parts of this frog doll require the use of supports and a brim. He is strung together with two types of elasticated cord and some parts require gluing. Stringing allows him to hold a wide range of poses.

To make this doll, you will need:

1) Elasticated cord: up to 3mm in diameter. Available from most hobby stores in the "kids' craft" section.

2) Elasticated string: Mine is roughly 1.2mm in diameter and available from hobby stores and anywhere that has sewing supplies.

3) Glue capable of sticking plastic (or whatever material you are printing with) together.

4) Tools:

i) Threading the cord through the pieces can be tricky, so I recommend the use of a hemostat to help hold cord in place whilst threading and to pull cord through holes.  However, small pliers and bulldog clips can work just as well.

ii) A crochet hook can help pull cord through holes and is available cheaply from hobby stores.

iii) A small pair of scissors to cut cord and string as needed.

Now I have a better idea of what I am doing, future dolls may be entirely support free, but I'm not promising anything...
 

Froggy can be downloaded from:

Youmagine
Pinshape
Thingiverse


There are 3 parts to his assembly and documentation for each:

Printing Froggy
Part assembly
Stringing the doll

 


 

 

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