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View Full Version : Cool thingy for hand drilling a straight hole for fellow far-sighted Machinists.



mayfieldtm
01-03-2013, 03:43 PM
I was nosing around in "instructables.com" and came across this Drilling Aid...

http://www.instructables.com/id/Double-Mirror-Right-Angle-Drilling-Guide/

My eyes aren't like they used to be and my glasses warp things, so, hand drilling an accurate straight hole is pretty much hit or miss.

This Drilling Guide uses two mirrors mounted at right angles and is set standing up behind where your drilling. When the 4 drill bits (3 mirror images) look parallel, then do it.

Tom M.

RussZHC
01-03-2013, 04:14 PM
Neat idea...two thoughts though, don't know if I can break the habit of looking "hard" where I want to drill (I suspect the best success will be if you look more at the images than the point of the drill) and is there not the chance of blurry "images" due to vibrations in a drill press say?