4

You may find that you need a brace with a larger than normal sweep for boring a hole this size. They were manufactured in various sizes. A more common configuration for an auger of this diameter would be something like a barrel eye pattern. They are still available new - here https://www.oldtoolstore.co.uk/new-barrel-eye-augers-various-sizes-available-84-...


3

Irwin makes adjustable bits that allow holes up to 3" in diameter to be bored with a hand brace. There may be other options available on EBay. Here is Irwin's web page for their versions of it.


3

If you grind off the tip you'll want to use a guide block to make sure the bit doesn't wander when you're starting the hole. To make a guide block just drill a hole the same size through another piece of wood and line it up with where you want your hole to be. Clamp it to the work piece and your drill bit won't wander. This is also useful if you want to ...


2

A "typical" design for forstner bits is one where the brad point is no deeper than (and often even with) the cutting edges, which means they are suitable for creating flat-bottom holes or insets. That is, the point on many traditional forstner bits should be no longer than the cutting edges. Removing the point will cause it to wander unless you are really ...


1

Between Black Oxide and Titanium coatings, bits with a Titanium based coat will generally fair better when drilling through soft steels and other metals (~A36 hardness). The greatest contributing factor; however, is the base material used to make the bit, and how it was formed (forged vs. ground). A soft, ground bit will not fair as well with the same ...


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