I do that too. I just made a wrench for my Quick Change Tool post. I milled a 1/2 inch 16 degree slot in the top of an old 1" 1/2 drive socket I found at a garage sale for 50 cents. I used 1/2 inch key stock with a 3/8-18 taped hole that holds the key stock in the milled slot. A 1 1/2 inch ball tops it off and it's easy on the hand. I used 16 degrees because the angle of the arm on the tool post is also 16 degrees and I made the length of the 1/2 inch key stock the same length as well so it matches. This tool is way better than the 1" wrench I've been using.