I print at 20% fill, the reason is to add weight to the print. I have minimal 3 outer layers (1.2mm). And I make sure each line in the layer sticks to eachother. So the object outside can be sanded a lot without breaking through the first outer shell line.
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tommyph1208 55
The idea is good... Somewhat...
I guess you could maybe achieve it by making a duplicate of your model, scaling it down slightly, and printing it inside the original, in a cheaper filament?
However, there is more to copperfill than the outside look, you would loose the heavy weight of the print, which I guess (at least to some) is a big part of a copperfill print?
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