Here is separate details to create your own pipe lamp design!
Just select and print pipes, angles, flange(s), socket holders etc. I've selected short and long pipes for my first simple sconce lamp you can see on photos.
Socket holder was designed for 40mm E27 lamp holder with outer thread.
Update 2018/Dec/18
Added: Different types of angled connectors (angle45, tree3, tree4*)
Stubs: with inner and outer threads
Photos of my new three bulbs lamp
3D Render of toilet paper holder with shelf
Update 2019/May/05
Added: angle_30.stl - angled 30° connector
Update 2019/May/06
Added: angle_60*.stl - angled 60° connector
Update 2019/July/23
Added: straight_conn.stl - straight connector