The Shop > Tools
Tinker tool and cutter grinder
Fergus OMore:
Jeff, no If you look at the Guy Lautard site for the Tinker, you will see the an end mill pointing down on the wheel to get the primary grind. Presumably(?) it is rotated 180 degrees and then turned again to do the first secondary clearance and obviously the last to complete the operation.
I may be wrong but, I do something similar with a the Clarkson with a BSO dividing head and holding a end mill in a collet. I have a simple block of metal under lip of the first lip- and then tilt to do both lands and then rotate the 180 degrees for a 2lip milling cutter( or 4 etc)
Actually I was checking with my Kennet and it follows a similar technique- although there are no degrees marked simply graduation lines
Does this help?
Norman.
chipenter:
The angle for grinding the end faces I can work out , it's the angle for the flutes some form of height guage is needed , Proff Chaddock provides a table of angles to height for a six inch wheel .
Fergus OMore:
The formula for 1 degree clearance (.0088") x clearance angle x diameter of the grinding wheel( in inches)
It's very old maths but that is probably where the books of information started.
Generally, you have to 'number crunch' but there we are.
Norman
chipenter:
Thanks Norman one it's set up I will mark it .
Fergus OMore:
Good, I look forward to the future instalments.
My next instalment was from a very old contact and I replied about something called a Goniostat for tool angles.Holzapffel stuff.
Cheers
Norman
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