bottle cap
thingiverse
Bottle cap: inner diameter is 37mm. Anyone can edit a copy of the original design at onshape.com. https://cad.onshape.com/documents/fda09b9d3e9ce2750f11c777/w/840cdf8f34f69e54fe117438/e/1f7f39f541d99b0f82047f35 Thanks
Download Model from thingiverse
With this file you will be able to print bottle cap with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on bottle cap.