Seperating a jack shaft from a broken axle please help.

I need to get the jack shaft seperated from that axle stuck on there, so I can finish my swap and 5spd conversion. I have one crowbar and it won't do anything I beat the living hell out of it onto the ground didn't do anything.
Any tips on how to seperate this? Right now all I can think of is another crowbar or getting a pot and boiling water and dipping that in it for a bit to maybe expand it?
Please help so I can get my car off jackstands :cheers:


