Topics

I've downloaded and studied Ton's excellent article on setting the grinding angle based on measurements of the length of the jig and distance from the support bar to the stone. No way I could come up with this. Excellent work.

Couple questions.

Fisrt. Is there a conversion of the tables to inch dimensions?  If not, I can do it, but it would be nice to avoid duplication of other's work.

Second. In practice, how have folks been determining/measuring the distance "S"?  The distance from the stone to the centerline of the Adjustable Clamp (AC) shaft immediately above the support shaft.  The distance from the support shaft to the centerline of the AC is about 6mm (0.236"). This difference is not accounted for in the article tables, at least as far as I have can tell. 6 mm is greater than the increments in Ton's table for the "S" dimension. Do you just shift a column/row in the table? Or?

Wondering,

Rick

Attached is a close up of my first drill sharpened on my T8. Took it real slow and alternated sides frequently.  Getting the primary facets went pretty quickly.  Getting the secondary facets was taking forever and got to the point of no progress by the time it reached the web.  I finally took off a bunch of the rear on a bench grinder.  Finishing off the secondary facets went pretty quickly after getting rid of all that extra material (5/8" drill).  Thought I was finished and took it out of the jig to take photos, but on magnification, I could see the secondary hadn't reached the center.  So back in the jig to finish it up.  As a result, the second grind on the secondary doesn't span all the way to the tip of the flute, but I believe that shouldn't matter.  In the future, I'll grind the heel away before putting it in the jig. 

Rick

Reading the manual section on "Thin Knives", diagrams on angle setting using the Angle Master depict the thin knife as having parallel sides, except for the cutting edge.  That is not what my knives have.  Instead they are angled.  A statement attributed to Leatherman, regarding their multi-tool knives stated the angle of the main blade is 9 deg. and the cutting edge 32 deg. (IIRC).  The manual seems to indicate that the bevel angle (cutting edge) can be set directly off of the blade side, but that ignores the angle of the blade sides.  Doesn't one have to subtract half the angle of the blade in order to get the correct angle for setting on the Angle Master? 

In the case above, it would be half of 32 deg. (16) and half of the blade angle (4.5) for a setting angle for the Angle master of 11.5 deg.?

Thanks,

Rick

Newbie Here, First Post,

Just recently received a T8 and several jigs. I will be doing primarily drill bits and knives. Watched the videos and reading the manual and everything else I can find.  Came across references to a "Grinding Angle Adjustment booklet" and that it is posted on the forum. I've been searching for where it is posted so I can download it.  Can't find it, so I'm asking for help.

Thanks,

Rick