Mark and Drill Weight Chambers

I'm working with the next mission is to create two chambers that would be carrying the weights of the putter so I created a line down the bottom and then made two incision points where I'll take my Forstner bit then bore out holes on the top and the bottom side of this putter head once the holes are bored out I've n needed to find some weights so I didn't want to buy any beads or any kind of lead so I decided to use some of the big heavy-duty lug nuts that I had