
The puzzle sphere could be a fun gift for those who are ready to rise to the challenge to balance it using only pens, pencils or markers.Materials:3d printing pen 2 rolls of filament ( about 10 feet each) a sphere aluminum foil a jar paper napkin 1 index card wire brush (to clean nozzle) 1 permane...
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ravenkingContinue Reading »from Instructables: exploring - featured http://ift.tt/2G1x1pG
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