I’ve become slightly obsessed with erlenmeyer flasks. I love their shape. I used a diamond tipped Dremmel bit to cut off the base of one using a makeshift jig and then cast the flask in poly-urethane (gross) and then tried to pour concrete in. I built a really simple jig that I cut out of duron on the laser cutter and unfortunately it floated up into my mold as I poured the polyurethane. Rookie mistake. Iteration 2 coming soon. I want to make it into a lamp shade.