set of four scale as desired this time i followed the traditional tapering plug design

models based on the picture i posted This was modeled for a request.

modeled in sculptris and truespace5

Not printed yet Infill of 10% is my best guess for the tops to come out ok

I have included the files of the tops and jar and plug in .obj format for those who might want to resize and otherwise use the forms (add a scanned head as a top?) anyhoots thought it would be something someone out there might want to play with