Method to detach a kickstand bracket stuck to bike frame? I installed a third-party kickstand on my bike when I first got it. It's seen lots of riding, rain and now a winter. 

I upgraded to a dual-leg kickstand for better balance when loaded down with utility runs. Bit after removing the kickstand bolt, I discovered the kickstand bracket was stuck to the frame. 

After a could of gentle whacks I decided to educate myself a bit more before I broke something I'd regret. Any suggestions on how to break the pieces apart as cleanly as possible so I can install the new kickstand?

I only have a basic set of tools and no real workshop (but I do have a work stand). If it's anything advanced I'll head to the LBS and see what they suggest. Thought I'd try my hand at it first.
Why bother being nice to it?  Noone likes those kickstands, they are soon removed from most bikes.  And many cyclists have one or more in their spares boxes!

Please have a good look for a second bolt too - I've never seen one with two bolts, but yours could possibly have a second.

You can also try


blast the whole joint with penetrating oil like CRC or rustblaster or RP7 or similar.
re-threadding the bolt part-way in and then tap on that
shove a scraper or a chisel between stand and frame and lever it
just belt the side of the kickstand with a hammer, use a rubber mallett or a block of wood if you want to avoid damaging the paint.
use the leg as leverage - grab then end and wiggle it both in the closed and open position.


Do let us know how you get on.