I used a power drill to drill 8 holes in 6.3/8" steel plate to create the Casting to cover and protect Aluminum body with uneven bolt holes for the two pieces of gear. This leaves me four extra plates, two of which we can add a platform to mount the tool. Time to measure bolt hole location. I have four right now Centering bits installed the holes into the four threaded holes in the case.While one person held the panel against the case, I tapped the first panel once with a hammer, drilled those four holes, and put the hole centering bits in the remaining four holes.Then assembled using four previously drilled holes, I pressed the board down and cut straight across one tip along each of the 4 dots. It leaves tiny nuclear marks on the steel plate. Before drilling I re-centered all the holes. I wanted the glasses to stay in good condition so I could use them on other projects. I didn't notice any damage to the tips or threads in the case, but I didn't hit the record too hard, just enough to leave a tiny mark. I then used the first board as a drill guide and used the transfer punch to drill through the remaining boards. They all fitted great and it took about 4 hours to complete the drilling for this project. sr_1_1_sspa?crid=8WVGCLX8F3NH&keywords=transfer+punch+set&qid=1637882796&sprefix=transfer+punch%2Caps%2C260&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzVk9ZNDVZSElUWENZJmVuY3J5cHRlZElkPUExMDAyNTg3MlpaOThVUENRQlBITyZlbmNyeXB0ZWRBZElkPUEwNjM3MjY0MU4wVkNMSVJUNjhUSCZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=
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