Marty,
Thanks, I usually use eye ball numbers and yours are a very good start.
Now to just get the time to grind a standard tool and one like yours...
Jeff
* REPLY SEPARATOR *
On 4/7/2007 at 7:22 PM Marty N wrote:
Jeff thanks for the photo tip. I'll give it a try sometime.
On center if I understand your question correctly. I sent Clint what I
hope
is a clearer picture a bit closer. Getting a snap of the front end was a
disaster. The upper point of the vee is the first thing to contact the
material. From the side view the relief under the point is 10 degrees back
and about .090" wide. The relief then steppens to 20 degrees for the
remainder. The square portion is .310" as is the round. From the square to
the tip of the vee is about 1.170". The vee is 90 degrees included and
.150
from the tip to the flat. The tool tapers from the vee in width from .180"
back to the square which is .140" . Side taper from top to bottom is about
10 degrees included. Hope that helps.
Marty,
Very interesting looking tool, thanks for the photos! Does the holder
locate the top of the vee on centre or above. It reminded me of a shearing
type tool, front straight across with rake, some back rake with the top
angled downwards from left to right, left corner above centre but it only
cuts at the intersection of centre. Supposed to give a very nice finish.
Before I face the joys of grinding of a cobalt HSS blank some more info
would be appreciated.
Jeff
PS: Standard jewellery photo technique for polished metal is a light
diffusion tent, AKA a white bed sheet or piece of paper between the light
and the metal. Diffused light = diffused reflections
Be sure to check out for small mills and
lathes.
Yahoo! Groups Links
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Demand Designs
Analog/Digital Modelling & Goldsmithing
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