Tutorial: How to make Dodechahedron
Here is another way to make a same thing but with help of sheetmetal features of SW. It used base flange, cut holes and sketched bend features.
First make sketch as you see on pic with 5 side polygon diameter 250mm and with base flange make a sheetmetal plate 1mm thick
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Step 1:
First step
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Step 2:
Now cut a holes -dia 2 mm on problematic corners - think where is!
Now use sketched bend at angle 63.43 degrees with radii 0.01mm -
Step 3:
Next bending with same parameters
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Step 4:
Final bending with same parameters.
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Step 5:
Here is flat pattern from sheetmetal
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Step 6:
And colored part