Got rid of the old windshield today - want to remove the steel dash frame before media stripping. Looks to be somewhere around 25-30 tack welds. No idea where they thought it was going. Five plus the 2 bolts each side would have sufficed. Also found a little bit of heavier surface rust in the corners. The mastic was plugging the drain hole on each lower corner - seen that alot on older cars. Anyways, is it easier to chisel or drill the spot welds out? I tried to just separate the 2 metals to get a grinder or chisel in there but they're pretty tight. Was going to take a 1/4" carbide ball mill in a drill and remove them unless there is an easier way. Thx.