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I'll try the paper clip version, if the teacher can print it.... The other version is printed, but I can't fit anything in it. The pictures that show a slightly thick copper wire astonish me, because all I could fit through was a REALLY thin cooper wire like this (https://sc02.alicdn.com/kf/HTB1NOQmQVXXXXa0aXXXq6xXFXXX6/Flexible-PVC-Insulated-Ultra-thin-Copper-Wire.jpg), maybe thinner, and I can't position it correctly, cause it bends so easily