I aggree with Scoti and Mr Kilgore. I should not have let Korbin do that without gloves. I personally do not like wearing gloves when using rotating tools, but the cut off wheel is an exception. The other major thing that was wrong with the grinder set up is the lack of the guard around half the wheel. We were using the only wheel I had left which was a little larger in diameter. I stocked up on more of the correct wheels now for when we get to the rear.
Tonight we plan to weld in the plates to finish boxing in the notch area and grinding the outside of the frame smooth. He will have to have his chores and room clean before we start...