Seoul-based designers Jeong-Min Lee and Hyoung-Min Park made packing tape that creates the impression of hinges wherever you lay it down. It's called "X-Tape".
Link via Super Punch | Photo: mmiinn
Seoul-based designers Jeong-Min Lee and Hyoung-Min Park made packing tape that creates the impression of hinges wherever you lay it down. It's called "X-Tape".
Link via Super Punch | Photo: mmiinn
the answer to your question lies within your question.
"exactly" ... It's called a blade. maybe even an Exacto knife.