Originally Posted by Mike L. V.
Originally Posted by meep
If you can get a cold chisel against the base you could coax it to rotate with a hammer. Pound a notch into it and then hit it to rotate.
Or the hail mary final move is to stab a screwdriver through it, but, you recognize the finality of that one (it's never not worked for me). But if you're nervous, Astro14 gives you a safe play.
Done the screwdriver trick and that works well.
+1 , had this happen to me when i was 16 - on our old Mitsubishi Mirage with the 1.5 SOHC - Screwdriver and a hammer worked on the base plate.