I broke the original glass shade and manufacturer has stopped producing the particular model, so have no option but to take the matter in hand and here is a solution.

My printer can print height of only 100m so I have cut it into two pieces, thinking will connect it with glue. I have already printed the bottom half and its working perfectly, not sure how will it look once i print and connect the extension.

For small lamp there is no need to print an extension shade.