I'd like to take this opportunity to share one of my experience and method of taking it off ( which actually works) looking at the photo of the cross sectional view of the chuck as seen in an earlier thread. I first measure 1" from the back of the chuck and I make a mark,then I take an old/new hacksaw blade and I make a mark on the chuck outside.and thats where I take an angle grinder and I cut the front of the chuck off so that I can access the back end of it,and then I hit the rest off using a small cold chisel in the same direction as if I was unscrewing it. The whole process usually takes me about 15-20 mins to complete,but it worked
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Have a Gr8 Day 
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