Spent a bunch of time, threw out a few designs as false starts and finally ended up with a model that works!
These are 5mL eyedroppers printed in PETG with graduation marks every 1mL. I actually think they look kinda cool, which is not something I usually say about eyedroppers.
Print Settings
These parts are designed to use a few solid layers on the bottom and then a continuous and unbroken profile all the way up the part. Prusa and Slic3r call this vase mode, while Cura calls it spiralize.
The key to a good print is going slow. If you have the ability to set a minimum time per layer (Cura has this), set it to around five seconds. This will allow you to set the wall speed to something like 25-30mm/s and the slicer will take care of the small perimeter layers.
If not, set the wall speed to around 10-15mm/s.
Cura also has a setting for top/bottom flow, which defaults to 80%. This will result in a base that is not air tight, so make sure this is set to 100% for this part.
Resolution: 0.2mm
Nozzle Diameter: 0.4mm
Line Width: 0.5mm (over extrusion for a thicker wall)
Bottom Layers: 5
Inner/Outer Wall Print Speed: <15mm/s
Spiralize Outer Contour: Yup
The author marked this model as their own original creation.