Hello from San Francisco, California, USA! I like how you are building your Öglaend , but the unusual seatpost was interesting. If you have an Öglaend pillar in good condition I could purchase it to use it on a project. It needs a small diameter seatpost, and enlarging the hole would be safer than reducing a larger one. I know shipping will be expensive! I will be short since I am writing in English.
on 10/10/20 bad people entered my small workshop and stole all my tools, iron cutting machines, emery, air compressor, a full toolbox, gas plug … I am married and the father of two girls who love to learn to fix things with me, the oldest is 4 years old and says that daddy can fix everything.