Instructables

Step 6: Push cable underneath door and pull on floss

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now what you want to do is push the cable underneath the door a little ways. and then gently pull on the floss. you'll want to go slowly so you don't break the floss. but pull on it till you think the cable is about where the doorknob is and try to hook it over the doorknob. this may take a few minutes but eventually you should be able to hook the doorknob.