I have an aluminum bicycle seat tube stuck in a steel frame. I have been using penetrating oils and heat and hammering and such to loosen the corrosion. Now I drilled a hole in the seat post, and can insert a metal rod.
How do I grip the rod with good leverage to turn out the seat post? Thanks for any advice. I don't have a socket extension, so I'm showing the image below with a screwdriver. I have an adjustable end wrench (25cm), but nothing bigger. I could rent something if necessary. So far, I can't turn it. Thanks for any advice!