Here is what I made today for my mill. A vise stop that everyone says is a item needed to produce multiple parts...I liked the idea and made this !! It started as a piece of 3/4" x 12" round carbon steel. Turned each end in 4" to 1/2" diameter. Milled a flat on one side to mount to back of vise. Drilled a couple 3/8" hole for the 3/8" x 16 cap screws and milled a flat for it to sit on. The knuckle for lack of better term is 2" x .900" x .850" since that what it measured after the fly cutting was done. Drilled 1/2" holes for the drill rod extention rod with 1/4" x 20 cap screws for the squeeze with the .060" slit saw. Turned both ends so I can use it on either side of vise. Drilled a hole at the end of the 1/2" drill rod to take the 1/4" x 20 all thread , the adjustment rod and added a flat for a jam nut. Painted the middle section not seeing much action to stop rust. If I would have had a piece of stainless steel I would've used that.