I loaded the upstream model into blender and scaled it up to about 19 cm in diameter, then I split the upstream model into separate parts, one model file for each color on the standard shield.
The “red” file contains the outer rim and inner ring. The “silver” file contains the star and the ring between the two reds. The “blue” file of course contains the centeral blue circle behind the star.
In the red and silver files, there are pieces that are suspended in mid-air. This is deliberate, so use your slicer’s plater to “split” the pieces and force them back down onto the plate. If you don’t, nothing will go wrong. You’ll just end up with a lot of excess support material to fill in the air under the parts. 🙂
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