4000 holes to drill in concrete wall.

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I am a metal fabricator and installer getting ready to start installing screens into the spandrel openings of an existing parking garage. We have about 4000 1/2” holes 4” deep to drill into the sill. The sill is 42”+ high. I have found several option for overhead rolling drill presses but none that seem set up for holding a hammer drill and drilling down. Anyone seen one of these or a company who builds what I am describing? I think we could build one in our shop, but I’m a no need to reinven...