Minime,<br><br>Pipettes are glass. To cut them, you score them with a triangular file and then snap them in two. The raw (sharp) ends are fire-formed (melted) to make clean edges. Or at least that's how I was taught to do do it in Chemistry 101. I earned much needed extra credit making glassware for my chem prof. I probably would have failed if it weren't for that and an Arlo Guthrie album (long story).<br><br>Take care,<br><br>Andy