Pipe plugs with threads for finial in 1/2 inch gas pipe curtain rod

thingiverse

We often make curtain rods from 1/2 inch gas pipe. You can cut the pipe to length and it usually doesn't need a center support. The plugs can be pounded into the cut end of the pipe to allow you to screw on a finial. The STL file is for a finial with 1/4 by 20 pitch threads. I've included the OpenScad design files if you want to remake them with a different thread size.