6. Heat it up. Hot air can weaken the adhesion of duct tape residue, making it easier to remove from such surfaces as unfinished and flat-painted wood, on which you wouldn’t use oil or water.

In creating this model, I inadvertently created the perfect WiFi antenna for an ESP8266 module using nothing but 3D printed parts, a bit of epoxy, and duct tape. The design of a parabolic WiFi ...