A 4 Facet Drill Bit Grinder DIY Style Final @Preso58
A 4 Facet Drill Bit Grinder DIY Style Final  @Preso58
Uploaded May 2023 | Updated September 2026, 2 weeks ago
#shopmadetools
In this episode....
I discover some errors in the 2D drawings which I had shared on Dropbox. These errors have been fixed and you can download the latest version now.
Calibrating the eccentric wheel for primary clearance angles.
CNC drag engraving the markings on the eccentric.
Sharpening an 11/32" and a 3/32" drill bit start to finish
Test drilling in aluminium and steel.
Announcing the next project.
The link to the dropbox files is here: dropbox.com/sh/38ahn5tz4qw5ypw/AACtAbmXNDYa4x0v9DD1NcEOa?dl=0
For anyone wanting the native Autodesk Inventor files, I will be uploading these soon.
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Mark Presling |

A 4 Facet Drill Bit Grinder DIY Style Final

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