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Step 1: Prepare the Text and Graphics
Step 2: Time for MATLAB Coding!
We then imported the image into MATLAB for further processing. Our goal was to warp the image onto a sphere with the words and snowflakes recessed into the sphere's surface.
Step 3: Apply a Little Image Processing Magic
To make the text and graphics gradually sink into the volume, which helps prevent overhangs and improves printability, we applied a Euclidean distance transform using bwdist
Step 4: Map Image Onto a Sphere
Step 5: Mix & Slice
The .obj file was imported into Meshmixer where we added a loop for hanging and prepared the .stl files.
We sliced the .stl model using Sli3r with 0.2-mm layers and printed the design with our Printerbot Simple using red PLA filament. The ornament is printed as two hemispheres that can be glued together. Stick a LED throwie (sans magnet) inside for a little glow.