Summary 100ml Measuring syringe, originally made on Orchard ( https://3DOrchard.com ). Made for 3D printing (including a slot for the O-ring) 1mm travel equals 1ml of volume. Link to original file: https://3DOrchard.com/#!/single/58238890013fe52f22c42a1a/58238894013fe52f22c42a24 How I Designed This Using constraint-based sketching in Orchard to create the plunger (https://3DOrchard.com) Using the Orchard modeling interface to add the O-ring to the model. Link to model: https://3dorchard.com/#!/single/58238890013fe52f22c42a1a/5824cda260174d920a718cf9