First off we need to "catch" a Minion. I had a little plastic guy from a happy meal, so that part is covered.
If you have an iPhone, 123DCatch has an iOS app. I had a friend try this, but at the time he was on iOS 7 and the app was not ready yet.
Never fear, if you don't have an iPhone, you can take pics with any digital camera and upload them to the 123DCatch web application (or use the Windows based application which has some extra features that optimize your model for 3D printing).
The directions for taking pictures are quite easy:
- place your subject on a patterned tablecloth (or use newspaper under the subject)
- add some unique reference points such as Post-it notes (I used bottle caps and a coin for reference points)
- take more than 20 pictures as you continuously circle the object.
Step 1: Upload Images and Create a New 123DCatch Model
- Launch the 123DCapture web application. (or use the Windows Application)
- Upload your images
- Name your creation and add tags and a description
- Press the Process Capture button
- Do something else for a while...this will take 5-10 minutes for the model to be processed.
Step 2: Trim the Excess and Export Your Model
- Trimming is a simple process, just use the lasso tool to select the sections you don't want and the use the delete option. I found it was easiest to do this in small sections rather than attempting to lasso the entire unwanted section.
- There are menu options provided to "heal" holes in your model...anomalies where the processing doesn't quite work. I didn't need to use this tool for this project.
- Save a copy of your edited model, keeping the original for "redo's"
- Use the Save/Download option and choose Fabrication to convert the file to STL format.
Step 3: Merge the Minion and the Pumpkin
- Edit the sample Jack O Lantern file in 123D Design
- (optional) use the stretch options to turn the round pumpkin into a more oblong pumpkin.
- Import the STL file we exported from the 123D Catch editor.
- Use the move tools to position the Minion so it seems to be emerging or carved out of the pumpkin
- The only problem here is you are limited to the STL file being all one color..my first attempt was all orange as shown...I wanted something different...so read on...
Step 4: Add Some Detail and Color
- Added white spheres in the goggles for bulging eyes
- Added smaller red spheres for the Iris/pupils of the eyes
- A half sphere flattened made for a nice smile
- a red rectangle for the tongue
- Use the Smart Copy option to create a duplicate of the Minion body
- Paint the copy Blue
- Use the Precise move option to move the Blue Minion 6 off on the x axis
- Create a Cube object and overlap the top half of the Blue Minon body (as shown in the picture)
- Select the Cube and the Minion body, use Combine -> Subtract to get rid of the blue top
- Use Precise move to move the Minion back into position
- Do essentially the same thing to get rid of the bottom yellow section
Step 5: Oops! 123D Lessons Learned
I made two mistakes when taking images for this model and as you can see it's a total fail.
- A small mistake was that I didn't include reference points as recommended by the 123D Catch tutorials (since I had a pattern in the tablecloth it might have worked anyway)
- I took pictures not only around the character, but on top of the minion as well...that isn't really a problem, but I flipped the camera over and then reoriented the pictures in a photo editor...I won't do those steps again.