123D Catch is an Autodesk Application that allows you to use a digital camera, mobile device or iPad to capture images of an object in the real world and transform those images into a 3D printable model.
Wait a bit for the service to process your images.
View the mesh.
Install the 123D Catch plugin on your computer.
Guidelines for capturing
Rotate around your object, capturing a frame every 5-10 degrees. You are trying to get at least 50% overlap between images.
Move the camera at regular intervals and in a predictable pattern (left to right and from top to bottom).
If using a camera take 30-50 photographs. If using the iPad you are limited to only 40 frames. You will get a ten frame warning. While it seems counter-intuitive, a point and shoot camera may take the best capture because of the algorithm used.
Decide on a focal length. Once you start capturing frames, avoid zooming in or out. Zooming will distort your capture and will make it impossible for the application to align your set of images. Try to fill the frame with your image.
Avoid reflective surfaces or objects with glare. Mirrored or transparent surfaces will not work either.
Before you start, plan out the order in which you will take the frames. Work consistently from high to low, and from left to right. If you keep your sequence consistent you will be able to to identify errors (if they happen) later.
Consider using some sort of marking system when your subject lacks discernable features. You need four points for registration between any one image and two other images in the collection. Consider using a high contrast tape. Place enough markers so that at least four are always visible from any of the positions you plan to shoot from.
Your subject should be motionless.
You can choose the resolution quality when you upload your captures at
So, you've got your 3D model back from the cloud. But, wait, there are some serious problems. There are hole, disconnected parts and there is no way that model is manifold. Don't panic, there is a quick fix.
is a free tool that can fix all your woes, and do it quickly.
works on a PC and OSX 10.7, but seems to particularly buggy on Snow Leopard 10.6.
I couldn't install it on a Mac with Snow Leopard, but visit the
, and maybe you'll have more luck . Download
and install it.
Open the application.
to open your
.You'll see your model with a number of spheres attached to it.
represent non-manifold areas
represent disconnected components
Left clicking on a sphere will repair the problem.
Right clicking on the sphere will select the area and allow you to edit that part of the mesh.
Now you can
You can do a brute force fill and use plane cuts to fix:
When you're done, you can export your file as an STL.
Open your obj or stl file:
Click on the
Right click on the blue sphere to select the area:
and a negative
. Drag to see the extrusion:
Click on the
Right click on the blue sphere and select
Scale in by dragging on the white box. Don't scale in too much, though:
. Then make a selection and choose
Erase and Fill
Here is the model capped:
Export your stl file.
Import an stl or obj file
Select a bit of the model
Expand the selection
Click on Transform Faces and move the selection
Click on Accept
Click on Import
Select a piece of the second model and expand the selection
Select Transform Faces.
Move the model to the right
Select the base and expand the selection.
Click Edit and select discard
Select the second model and expand the selection
Select Transform Faces
Move and enlarge (You can scal e by clicking and dragging on the white box in the center)
CONTROL + click on the first model to make it active. Make a selection and expand it. Then select Edit>Separate
CONTROL +click on both models and select Edit>Combine
Repeat the last process to combine the models and the base
Fix model with
Add details with the program of your choice:
Open in Replicator G, skein the model.
Alt+LeftMouse: tumble camera around object (turntable mode)
Alt+MiddleMouse: pan camera
Alt+Shift+LeftMouse: pan camera
Alt+RightMouse: zoom camera
Alt+Ctrl+LeftMouse: zoom camera
f: import new mesh (mesh)
e: Export current mesh
Ctrl+S: Save current .mix file / save as new .mix
Ctrl+O: Open existing .mix file
ESC: cancel current operation (selection, cut/fill, drop)
a: Accept current action
s: switch to Selection tool
w: toggle Wireframe
b: draw Boundary edges (useful for debugging)
(: previous view
): next view
LeftMouse (+drag): add to selection (click, or drag to paint)
Shift+LeftMouse: remove from selection (click, or drag to paint)
RightMouse+drag: grow/shrink selection
mouse wheel: brush size
Volume Brush Tool
LeftMouse: apply primary brush
Shift+LeftMouse: apply secondary brush
Ctrl+LeftMouse: invert brush (only certain brushes)