Brucey wrote:I know someone who has that tool. It is quite good but you still need to use the hammer on ones that are well stuck. The tool is also rather pricey. So overall, probably not worth the money I'm afraid.
Oh yes Brucey - all tools have their limits - often because the parts that they are designed to separate are 'stuck' really fast, whatever 'stuck' means in any situation - remember the freewheel removers with the two lugs that engaged with the freewheel? - before the advent of splined removers? - and how many of us have smoothed off an allen key? - nothing is perfect.
I subsequently encountered your "thick-walled tube" method, but it was too late for me because I'd started using cotterless cranks by the time I was shown it. To be honest, if I'd had a better brain than I have, I'd have thought it out for myself. I never damaged any BB bearings as far as I know, whilst not using what I now know as proper support.