This is a really simple lamp with options for smooth or ribbed sides. It was designed for a bottle lamp kit purchased from Amazon; the dimensions for that are shown in one of the images above. Because the threaded section of the lamp kit was quite long I added a spacer that goes inside the lamp so that just enough of the threads extrude for the collar to attach to.  The bulb I used for the photographs is a 60W equivalent and way too bright - both for my liking and for the opacity of the print (I used 4 perimeters).

I have a matching/co-ordinating vase file to upload also.