I used a power drill to drill 8 holes in 6.3/8" steel plates to fit the die cast aluminum case with a custom bolt hole cover and protect pattern for two pieces of hardware.This leaves me with four extra boards that we can add two of as a platform to hold the tool.It's amazing how easy and quick this made the job without wasting time with the wasting measuring the bolt hole positions. just installed four hole centering lugs into the four threaded holes in the body. As a person pressed the plate against the body, I tapped the first plate once over each centering hole tip with a hammer. I drilled these four holes and put tool holes- Center bits into the remaining four holes.I then drilled the panel using the four previously drilled Installed in the holes, pressed them down and tapped directly over the 4 points with a tap each. This leaves tiny alignment marks in 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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