Wing Chun Dummy

3D modeling

With my Wing chun class, we thought about building our own transportable Wing Chun dummy for our training at different location.

My Sifu shared with me the blue prints he made for his own dummy. From that, I created a 3d version of it with Fusion 360.

Test Prints

Having a nice 3d model, I printed it at 10% of the real size. I added some clip to maintain the parts together but they-re not strong enough at this size. I also made an alt model whith the limbs merged to the body and adding a slight offset to make it stronger. I also add a ring at the top. Printed at 5% of real size, it made a nice keychain.

Next to do

Having no access to a CNC Lathe, we thought of machining the arms on a standard cnc machine by machining them in 2 half parts and glue them together. Tool path is already program in Fusion 360, but just need to add holes for alignment with dowels.

The leg tool path has to be made

A wood body should be the best but it needs specifics tool to work with. Plus, the overall weight should be problematics for transport. We thought to try a version with PVC pipe and see if it’s strong enough.

We’re note clear yet how to make the support part. Probably we will use someting than can use water as counterwheight.

Alternative Idea

Seeing different model on the internet, we thought of light model we could attach to a support post.

I sawed a shovel handle with the miter saw to make the arms.

At first, I made a 3d support in PETG to support the arms and guide the screw. But somehow, I failed to have the good measurement and run out of petg, so i only used it as a template to drill the plank. To match the angle, I sawed the 2 upper arms with a 15° angle.

Unfortunately, this assembly isn’t strong enough.

Next should be : - make the arms going through to plank (to maintain orientation). - add wooden stop to avoid the arms slipping - fixature to the post system (belts ?)