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Simple speaker for any size of phones.
print it vertically.
if you're going to print the 0.2 or 0.4 supported designs you don't extra supports. choose 0.2 or 0.4 design depending on the diameter of nozzle you are using.if want to make your own support print the "no support" design.
parameter lines: 1 but I recommend 2 lines.
PLA filament will do.