Drilling a hole here that comes out there

[Nick Hulme]

This is an old one so I expect most of you know it already.

You have a part and you want a hole that goes in here -

And comes out here -

So you centre both points

Then you get you one of these -

And put it here -

Drill both ways up, each time with the bottom hole on the centre, the target here is a 7mm hole so I started with 5mm from each end -

Then drill freehand through from each end with the next size up, 6mm here,

And finally finished size from each end and you're golden -

Demo is wood but I've used it on Aluminium and steel parts, sometimes you need a custom centre tip,

- Nick

 

[10K Pete]

Yeah, I learned that trick a long time ago. Pretty darn slick, who ever came
up with that .........

Pete

 

[Edke6bnl]

great idea new to me. thanks