Steel rims insoluble on the wheel hub rusted

Hi guys! I wanted to put down my winter tires (original Ford steel rims) like every year on Saturday and put the aluminium back on it again and fail to get the steel rims back from the wheel hub of the brake drum anymore. My neighbor has been presiding for years to make copper paste on the hub before I pull the winter steel rims on it more easily down the tires in the spring, but for 15 years I have had the rims without copper paste in the morning. I have already sprayed the hub with WD40 and let it in for the whole hour, then hammered with a sledge hammer (wood bar in between) from the inside strongly on the rim to remove the hub. Then I screwed the screws on both rear tires again, but not completely screwed, so that they 1-2m m far out looking and playing, but of course so little game that the rim can not slip off the hub and I drove once around the bloock with the loosened wheel screws –> Felge still sits bomb-proof on the hub. Then again really roughy with loosened wheel nuts and fully tightened handbrake alternately in reverse and 1st gear (until the front wheels turn through). –> There does not happen, the rims sit insoluble on the rear wheel hub. zt again samstrag evening and Sunday neatly sprayed with WD40 and wants to try to get the rims down again tonight. If it is not possible again, you have another trick in stock above me only the workshop visit remains. If then the first time in 15 years I would have had to go to the workshop because of a tyre change. Gruss, Andreas (which will also use copper paste from autumn onwards)