saw flat bottom forstner bits advertised and first thing i thought of
was all forstner bits are flat bottom but i wonder if that is true

On Monday, March 28, 2016 at 6:22:33 PM UTC-5, Electric Comet wrote:
saw flat bottom forstner bits advertised and first thing i thought of
was all forstner bits are flat bottom but i wonder if that is true

They are, but the method of grinding the cutting surface differs. All also need that central spur, just cannot get away from it.

On Tue, 29 Mar 2016 03:43:37 -0700 (PDT)
"Dr. Deb" wrote:

They are, but the method of grinding the cutting surface differs.
All also need that central spur, just cannot get away from it.

but spur or not it is still flat bottom so i guess advertising
flat bottom forstners is just an accoutrement to the marketing
blurb

there are some videos of making flat bottom holes with no center point
using various techniques

one guy just ground down a regular bit but that was not a large
diameter bit

i guess if the point is a problem just grind it off