[Axel]

I did some tests yesterday with exchanging the solid wheel from my english wheel to a polyurethane one (pinched from a heavy load carrier), and the results were amazing.
I was able to easily bend the area around the blister, did the corners with the planishing hammer, and wheeled it afterwards with the solid wheel to partially stretch it and smooth it out.
I am pretty satisfied with the result as it was the first attempt, but have a look yourself!