Wishbone Drill Sharpener

[dave90]

I wish to make personal contact with Bill C and Handlewanker about the long discussions about the wishbone drill sharpener, that were in this forum in 2003 and 2008. I have been trying to purchase such a tool, without success. I would appreciate personal contact for the exchange of photographs, drawings and a detailed description of the setup and use of the tool. Please contact me direct if possible at my address of dave90@adam.com.au
Thanks in advance from Dave Ticehurst.

[neilw20]

Dave.
Ian had shown me a pictures so I had to create one to try it out.
I can sharpen 0.4mm solid carbide drills in a minute or 2 now.
The trick was learning how much to grind off.
1). Grind the end flat and square using your finger for support.
2). Grind the first flat. Temperature rise on finger says when it is done !
3). Grind the second flat. Temperature rise on finger says when it is done !
4). Inspect and if failed, go back a few steps.
5). Lap the flats on a diamond lap.

Sharpening drill bits by hand

3D model, some Gcode and pdf. That's my first attempt. Ian got curious and traveled almost 1 hour to make sure it was real. I saw his original one in it's case along with all the accessories.