I never thought I'd use the words "ACUPUNCTURE " and "Model Airplanes" in the same sentence, but I'm loving these pins! Oh yeah, that's right, we probably shouldn't call them acupuncture pins, since they're actually "3D printer nozzle cleaning pins" 😉. Very cheap on Amazon. Tee pins have their use, but these are so thin you can thrust right through small balsa sticks without splitting.