To cut them roll the straw on the table while rolling the edge of your knife along the top the same way you'd cut a Styrene rod, then snap at the score to make a perfect break. They're hollow and octagonal inside so you can insert a screw/post into the weapon for added strength. I recommend prepping them with Loctite's Plastic 2-part Superglue system. Just drill a hole in the weapon you want to add the post to, use the primer, then glue! Now anything can fit into a mech-tech port or hand, our search for 5mm posts is over!
