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You mean to tell me that you can't drill a straight enough (level and perpendicular to the door facing) hole through a distance of only 1 3/4 inches?
The way I do it is I first use a sharp thin drill bit for a starter hole. Then I upsize to nearly the size hole for the peep hole...but about 1/8 inch undersize, about. Then I use my cone shaped reaming tool.
Why do I do this? Well...this is for those foam core steel doors. Since a standard peephole has only like 1/16 inch lip on it...if your drill corkscrews through the thin sheetskin of the door, oblong...you are f***ed (or you have to buy the big lipped version) So I prefer to undersize drill it and hone it true with that cone shaped metal cutting tool that goes in your drill. You can buy at home centers.
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