Hand Tools Archive

Subject:
I have never looked closely at...

David Weaver
I've never looked closely at what's going on before, but this is exactly what I'm looking for.

These are the two chisels used in the video, but I had to refresh the facet on the flat bevel chisel to make sure it wasn't damaged at all, and I've since used the unicorn chisel to mortise a rosewood plane body, and thus refreshed it just as I would've otherwise.

Our guesses about length seem to be confirmed - the buffed bevel appears to remove about 2 thousandths of edge length and what's left behind is not particularly blunt anywhere, but if there is an area of a lot of steepness, it's only at the very edge (thus, it moves through beech easier than the flat bevel in the video)

these pictures are at the same magnification as the damage pictures posted elsewhere on here.

It's fairly easy to see why the modified edge is more desirable than the amount of damage shown. That was the damage for what would've been equivalent to chopping a couple of half blinds out. The unicorn edge showed no damage (and interestingly, no wear marks - though wear may have been just at the very edge because there's nothing to hold the back of the chisel that tight against a leaf of wood shearing off of the end of a board).

Messages In This Thread

Sharpening and buffing progression pictures *PIC*
Separate on the IH sorby chisels..
If the UK guys are correct...
Comparative Profile Pictures
Re: Comparative Profile Pictures
Re: Comparative Profile Pictures
I have never looked closely at...
Profile pictures *PIC*
Thoughts on the data
Scale of Image
Re: Thoughts on the data
Angle near the edge *PIC*
Re: Angle near the edge
Re: Angle near the edge
This is a difficult thing to do precisely
Re: Angle near the edge
Capturing the Unicorn Profile
Re: Capturing the Unicorn Profile
Outstanding work, Winston! *NM*
Re: Capturing the Unicorn Profile
but, do I need to?
Calcined alumina *PIC*
sounds like gunpowder...
Scratches from various compounds *PIC*
Scratches from more compounds; buff vs stick *PIC*
Other Compounds
Re: Other Compounds *PIC*
Correction
Re: Other Compounds - reinventing the wheel...
will do...
Well! good work
Red stuff
File in useless knowledge
partly my fault for voluminous posts..
hardness of iron oxide
Google monster says
Re: hardness of iron oxide
Wooden planes
Re: Wooden planes—Steve Voigt link *LINK*
Re: Wooden planes
Re: Wooden planes
Re: Wooden planes
Re: Wooden planes
Thanks, Jon!!
Re: Wooden planes
great experiments
Re: great experiments *PIC*
Re: Scratches from more compounds; buff vs stick
wait till you try...
The white stuff is...
Re: The white stuff is...
various compounds - difficult to judge
Re: various compounds - difficult to judge
looking forward to...
Further Observations
Some other things to try
Re: Some other things to try
Re: Some other things to try
Re: Some other things to try
I am anxious to try your suggestion *NM*
Interesting..
Re: Interesting..
not sure I agree
Re: not sure I agree
Re: not sure I agree
Re: not sure I agree
Re: not sure I agree
Factory ground *PIC*
Marples catalog...
Re: Factory ground
Re: Factory ground 1816 *PIC*
Re: Factory ground 1816
Re: Factory ground 1816 *PIC*
blogger grind
Re: blogger grind *PIC*
you're still failing...
after you do your survey, you'll find
Re: Factory ground 1816
Re: not sure I agree
I remember reading this...
great work
Thank you for experimenting
these results will require some study
David & Winston
Buffing wheel vs hard felt
Re: Buffing wheel vs hard felt
Re: Buffing wheel vs hard felt
Re: David & Winston
Thinking about establishing the Unicorn profile
Amen, Reverend
Re: Amen, Reverend
Tormek
if the tormek had a higher speed leather wheel...
Clarification, please
Re: Clarification, please
Re: Clarification, please
Re: Clarification, please
Re: Clarification, please
Preparing a beading blade
Re: Preparing a beading blade
for testing plane blade durability..
Re: Sharpening and buffing progression pictures
Re: Sharpening and buffing progression pictures
Suzuki Tool 4000
judging scratches
eek...expensive..
Re: Sharpening and buffing progression pictures
Re: Sharpening and buffing progression pictures
Re: Sharpening and buffing progression pictures
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