|Two of the four droppers I bought from KAF|
Not being in a mood to be denied, I decided to pull the dropper out of the original cap, and make a cap to fit the clear, small mouth bottles. Using Alibre and calipers, it was easier than I had hoped, and also fit the McCormic bottles from the grocery store! Hurrah!
|Orange oil with dropper, and three more caps I printed.|
While Shapeways says that the plastic is not food safe, the cap doesn't touch the extracts. The black rubber on the dropper acts as a gasket/seal, and serves as a barrier between the cap and the bottle. If this makes you uncomfortable, then I suggest not getting them. Personally, I am comfortable that it is safe.
|Variety of bottles with and without droppers.|
|McCormic bottle with and without dropper.|